Publications

Found 174 results

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2013
Gizaw S;, Getachew T;, Goshme S;, Mwai OA;, Dessie T. "A cooperative village breeding scheme for smallholder sheep farming systems in Ethiopia."; 2013.
Mwai OA;, Chang-Yeon; C, Dessie, T; Mamo Y. "Country Domestic Animal Genetic Resource Information system (C-DAGRIS)."; 2013.
Mulindwa, H; Galukande WMAO; SE; M; J. Evaluation of Ankole pastoral production systems in Uganda: Systems analysis approach.; 2013. Abstract

The production objectives of Ankole cattle pastoral production system are shifting from traditional subsistence to commercial enterprises involving adoption of a new production system where farmers keep separate herds of Ankole and Friesians x Ankole crosses on the same farm. The ecological and economic sustainability of the emerging Ankole production system is currently being assessed through system analysis approach using a dynamic model to identify conditions under which either one or both gonotypes can be kept on a sustainable basis. The dynamic herd-based model is used to simulate pasture growth, reproduction and production of the two cattle genotypes. The developed model was evaluated using post weaning growth. The calculated average RPE value of 0.075% for growth (body weight) after weaning across both breeds is below the acceptable 20% and means that the model predicts post weaning growth with an error of 7.5%. The model also predicted changes in herd milk production throughout the simulation for a herd that was managed by the same rules but grazed at dynamic stocking rates over the simulation period. Herd milk production increased with increasing stocking density. However, the increase in herd yield had a negative effect on milk production per individual animal. There is need to evaluate the system using controlled stocking rates (ecological carrying capacity values) and assess their economic viability as well as determining appropriate cattle off-takes.

Ojango, JMK; Audho JO; MAG; ZPOAME; J;. Genetic improvement of sheep under changing environmental conditions.; 2013.
Dessie, T; Gebreyesus G;, Mekuria G;, Jembere T;, Woldu T;, Agaba M;, Mwai OA. "Harnessing genetic diversity to improve goat productivity in Africa: Ethiopia component."; 2013.
Gebreyesus G;, Wamalwa M;, Dessie T;, Agaba M;, Benor S;, Mwai OA. "Harnessing “ODK collect” on smartphones for on-farm data collection in Africa: The ILRI-BecA goat project."; 2013.
Blϋmmel M;, Toye P;, Mwai OA;, Wright I;, Randolph T;, Staal S. "Importance of livestock and the technological and policy challenges facing the development of livestock in Africa."; 2013.
Rege JEO;, Mwai OA. Improving our knowledge of tropical indigenous animal genetic resources.; 2013. Abstract

To better manage, use and conserve animal genetic resources (AnGR), we must understand the nature and distribution of both the phenotypic and genetic diversity that they posses. This module makes a case for and highlights issues and methods that underpin improved understanding of the diversity in AnGR as a basis for designing conservation and sustainable utilisation of the diversity (the subject of Module 3). The module emphasises the need to undertake phenotypic and genetic characterisation of indigenous breeds in order to improve our understanding. It also points out the role that modern technologies and indigenous knowledge may play in this process. Within the module there are links [blue] to the web resources and [burgundy] to case studies and other components that help illustrate the issues discussed. Various photographs referred to in the text are included in the appendix at the end of this document.

Okeyo AM, Ibrahim MNM;, Ali, A; Bhuiyan AKFH;, Choudhury MP;, Sarker SC;, Islam F;. Morphometry and performance of Black Bengal goats at the rural community level in Bangladesh.; 2013. AbstractWebsite

Data on morphometrics and performance of 106 Black Bengal goats were collected through an in-depth monitoring survey conducted in 73 families of Gangatia, Borachala and Pachpai villages of Bhaluka Upazila, Mymensingh, Bangladesh using a structured

2012
"Accuracy of pastoralists' memory-based kinship assignment of Ankole cattle: a microsatellite DNA analysis." Anim Breed Genet. . 2012;129(1):30-40. Abstract

This study aimed to estimate the level of relatedness within Ankole cattle herds using autosomal microsatellite markers and to assess the accuracy of relationship assignment based on farmers' memory. Eight cattle populations (four from each of two counties in Mbarara district in Uganda) were studied. Cattle in each population shared varying degrees of relatedness (first-, second- and third-degree relatives and unrelated individuals). Only memory-based kinship assignments which farmers knew with some confidence were tested in this experiment. DNA isolated from the blood of a subsample of 304 animals was analysed using 19 microsatellite markers. Average within population relatedness coefficients ranged from 0.010 ± 0.005 (Nshaara) to 0.067 ± 0.004 (Tayebwa). An exclusion probability of 99.9% was observed for both sire-offspring and dam-offspring relationships using the entire panel of 19 markers. Confidence from likelihood tests performed on 292 dyads showed that first-degree relatives were more easily correctly assigned by farmers than second-degree ones (p < 0.01), which were also easier to assign than third-degree relatives (p < 0.01). Accuracy of kinship assignment by the farmers was 91.9% ± 5.0 for dam-offspring dyads, 85.5% ± 3.4 for sire-offspring dyads, 75.6% ± 12.3 for half-sib and 60.0% ± 5.0 for grand dam-grand offspring dyads. Herd size, number of dyads assigned and length of time spent by the herder with their cattle population did not correlate with error in memorizing relationships. However, herd size strongly correlated with number of dyads assigned by the herder (r = 0.967, p < 0.001). Overall, we conclude that memorized records of pastoralists can be used to trace relationships and for pedigree reconstruction within Ankole cattle populations, but with the awareness that herd size constrains the number of kinship assignments remembered by the farmer.

2011
Philipsson J, Rege JEO, Zonabend E. Animal improvement for increased productivity and food availability.; 2011. AbstractWebsite

This module discusses important factors to consider when designing sustainable genetic improvement programmes, especially under tropical conditions. Previous attempts to launch breeding programmes in developing countries have too often failed for several reasons, although there are success stories to learn from as well. Long-term and simple strategies are necessary as is the need to efficiently exploit the potential of indigenous breeds. Increased productivity per animal or area of land used also need to be considered. However, that must be achieved while also considering the variable socio-economic and cultural values of livestock in different societies or regions. Within the module there are links [blue] to web resources and [green] to case studies and other related components of this resource that help illustrate the issues presented.

Mwai OA. Breeding indigenous livestock at ILRI: Red Maasai sheep in Kenya.; 2011. Abstract

For the November 2011 'liveSTOCK Exchange' event at the International Livestock Research Institute (ILRI), Okeyo Mwai reflects on livestock genetics research work with the native red Maasai sheep breed in Kenya

Philipsson, J; Zonabend BRC; OAME;. Global perspectives on animal genetic resources for sustainable agriculture and food production in the tropics.; 2011. Abstract

This first module provides some insight into the need for better use of animal genetic resources (AnGR) in the context of projected demand for food in developing countries until 2020. Worldwide, about a billion people do not have enough to eat; a livestock revolution is currently underway to meet the nutritional needs and improve the livelihood of poor people. However, the recent international food and financial crises have again worsened the situation for many of the world’s poor. The module provides the background, facts and reasons for increased attention to improved utilization and maintenance of AnGR for food and agriculture in developing countries. It also provides a list of some key literature. References and links are made to web resources and to other parts of this resource. Some case studies on breed resources and other relevant components of this resource (CD and web version) help illustrate the issues presented.

Camargo; Viana, JHM; Okeyo AM, Muasa B;, Mutembei HM;, Tsuma VT;, Origa RA;, Camargo; Viana JHM;. In vitro embryo production using Boran (Bos indicus) oocytes in Kenya.; 2011.Website
Tadelle, Dessie; Yetnayet M; OM. Information systems on domestic animal genetic resources.; 2011.
Scholtz MM, McManus C, Okeyo AM. "Opportunities for beef production in developing countries of the southern hemisphere.". 2011. Abstract

Developing countries from the southern hemisphere have similarities in terms of climatic and agricultural conditions and cattle are the most important livestock species in these countries — which leads to many areas of similar interest and opportunities regarding beef cattle production. The increase in demand for meat in developing countries offers large market opportunities for livestock producers. If the productivity of beef farmers can be improved to commercial levels, it may have the potential to address poverty in these agriculturally based economies. Climate change is predicted to be highly dynamic and can have adverse effects on crop and livestock productivity. The cattle breed to be used and the production strategy to be followed in developing countries of the southern hemisphere will depend primarily on the environment and level of management. The availability of diverse cattle breed resources with adaptive and productive differences will allow breed types to be matched to different environments, management capabilities and markets. In the harsh and undeveloped areas or pastoralist systems, pure breeding with e.g. Sanga, Zebu or naturalized breeds may be the only production strategy that can be followed. In the more developed areas, crossbreeding with small indigenous cows may succeed in improving the output of beef cattle farming. It is believed that crossbreeding will gain importance in many developing counties in the southern hemisphere. It is therefore essential that crossbreeding studies be conducted where necessary, to supply information regarding heterosis and for the development of multi-breed genetic evaluations, breeding objectives and decision making. By describing production environments it may be possible to identify genotypes that are adapted to a specific environment. However, tools are needed to overlay geo-referenced data sets onto the different environments. Statistical science continues to support animal breeding and improvement, especially with respect to production traits. Traits linked to fertility and/or survival are still problematic and the appropriate quantitative breeding technology to properly handle these traits still needs to be developed. Gene or marker assisted selection may play an important role in selection for disease and parasite resistance or tolerance, since it is generally difficult to measure these traits directly. Strategies that utilize EBVs derived from genomic analyses (genomic EBVs), together with conventional mixed model methodology, may speed up the process of breeding animals with subsequent higher and more efficient production. The application of a landscape genetics approach offers the potential to greatly enhance the knowledge of how landscape heterogeneity influences the genetic population structure, gene flow, and adaptation. Results from these studies can be used to address questions related to species management and conservation.

Peacock C, Ahuya CO, Ojango JMK, Okeyo AM. "Practical crossbreeding for improved livelihoods in developing countries: The FARM Africa goat project.". 2011. Abstract

Successful livestock improvement programmes focusing on low-input smallholder production systems though rare, are possible using community-based approaches. This paper outlines important design and implementation components of a goat improvement programme undertaken by FARM Africa in the eastern highlands of Kenya. Through strong capacity building initiatives at grass-roots level, producers were empowered to undertake a goat genetic improvement programme that benefitted them in several ways. This resulted in the farmers forming their own umbrella organizations to cater for their interests as producers in accessing animal health and breeding services, production inputs, and marketing goats and goat products. In seven years, the population of improved goats in one of the project areas increased from 2100 to 5500, and the livelihoods of the participating farmers improved. Income from sales of milk and improved breeding and slaughter stock increased, while food security improved as a result of daily milk consumption and improved crop yields resulting from use of the rich goat manure. The project has, however, faced challenges arising mainly from the popularity of the improved goats within the Eastern Africa region, which has resulted in sale of a large number of the young animals, leaving few replacements within the project area. Uptake of goat breeding by private commercial farmers to provide breeding stock and replacement animals is currently lacking. Further research and evaluation is required on how to strengthen collective-action based institutions to improve services within smallholder farmer communities.

Rege JEO, Marshall K, Notenbaert A;, Ojango JMK, Okeyo AM. "Pro-poor animal improvement and breeding — What can science do?". 2011. Abstract

Livestock provide a wide variety of goods and services that generate income and support the livelihoods of millions of poor people in the developing world. Natural and human selections have shaped existing livestock genotypes throughout the estimated 12,000 year history since the first animal domestication. The result, in many production systems in the developing world, is a livestock genotype adapted to its environment and capable of meeting the needs of smallholder farmers. However, this adaptation is unlikely to be optimal and the rapid changes currently affecting the livestock sector, including policy and market changes, movements of germplasm frequently involving the importation of exotic breeds, and the increasing impacts of climate change are affecting the livestock genotype-environment optimum. This is challenging livestock production systems of smallholder farmers. Current challenges include: high rates of loss of the diversity in livestock populations, rapid transformation in smallholder production systems requiring significant changes in genotypes and their management; increased demand for quality and safe foods; increased market competition in a globalizing economy; increased need for complex partnership arrangements in the ever-changing livestock commodity chain; and lack of adaptive capacity to respond to the rapid system changes. Underlying all these is the general lack of strategies for genetic improvement of livestock in smallholder systems and poor livestock infrastructure in developing countries. Opportunities include increased demand for livestock products — and hence potential market opportunities, and new technologies with potential to leap-frog breeding progress in developing countries. This paper analyses options for pro-poor livestock improvement in developing countries, with particular emphasis on the potential role that science – both old and new – will have, from understanding the social underpinnings to innovative technical solutions. It concludes that one of the highest priority interventions for the smallholder systems is the development of innovative approaches for the strategic use of appropriate genotypes from the available range of global breed resources. The analysis strongly suggests that the highest priority ‘breeding intervention’ should be the provision of appropriate genotypes in a sustainable manner, underpinned by a good understanding of what breed resources exist that have demonstrated potential, where else they could be used, and how they would be delivered to smallholders. Efforts to improve/refine breeding skills of smallholders should proceed in parallel. Institutional arrangements and enabling policies are critical for the success in identifying and applying appropriate genetic technologies, improving access to input services and facilitating access to markets in order to translate productivity gains into incomes

Kugonza DR, Nabasirye M, Mpairwe D, Hanotte O, Okeyo AM. "Productivity and morphology of Ankole cattle in three livestock production systems in Uganda.". 2011. Abstract

Phenotypic characterization is critical in breed improvement and conservation. To determine the performance and morphological features of Ankole cattle in three livestock production systems (LPS) of Uganda, 248 farms were studied. Height at withers (HW), heart girth (HG), body length (BL), ear length, horn length (HL), distance between horn tips (HS) and body weight (BW) were then measured on 120 bulls and 180 cows. Data were analysed using LPS (crop livestock, agropastoral, pastoral), county (Gomba, Kazo, Kiboga, Mawoggola, Nyabushozi) and sex (females, males) as main factors. In the results, age at sexual maturity was 23.6 ± 0.5 months for bulls and 22.7 ± 0.5 months for cows. Age at first calving was 33.2 ± 0.5 months, whereas calving interval was 12.9 ± 0.8 months. Lactation length differed between LPS (5.5 ± 0.4, 6.3 ± 0.3 and 7.4 ± 0.2 months in agropastoral, crop livestock and pastoral, respectively). Mean daily milk off take was 2.2 ± 0.1 kg/cow whereas preweaning calf survivability was 90.0 ± 6.5%. Sex and LPS significantly influenced HW, HL and HS. Positive correlations were observed between BW and HG, BL and HL. Correlation coefficients were much lower in females than in males, except for BW vs HG and BW vs HW. Results show wide variations both in performance and morphology suggesting that within breed selection scheme and/or management improvement may lead to productivity improvements.

Sölkner J, Mulindwa H, Galukande E;, Wurzinger M, Ojango J;, Okeyo AM. "Stochastic simulation model of Ankole pastoral production system: Model development and evaluation.". 2011. Abstract

In the Ankole pastoral production system animals are grazed on pasture all year round. The cattle are not supplemented with conserved pasture or commercial feed except minerals. The large number of factors that influence production makes it impractical and expensive to use field trials to explore all the farm system options. A model of a pastoral production system was developed to provide a tool for developing and testing the system; for example, drying off animals early and supplement them for quick return on heat, testing the economic and ecological viability of the different stocking rates. The model links climate information, on a monthly basis, with dynamic, stochastic component-models for pasture growth and animal production, as well as management policies. Some of the component models were developed and published by other authors but are modified to suit the Ankole pastoral conditions. The model outputs were compared with on-farm data collected over 3 years and data collected for other on-farm studies in the region. The relative prediction error (RPE) values for body weight after weaning across both breeds ranged from 3% to 12% which is below the acceptable 20% and means that the model predicts post weaning growth with an average error of 7.5%. The model predicted pasture production and milk yield across seasons with relative prediction errors of 17.6% and 3.33%, respectively. The graph shapes of actual and predicted average daily milk yield as influenced by season (month of the year) were similar. Because pasture growth and milk production predictions were acceptable, economic predictions can be made using the model to test different management options such as seasonal breeding, alterations in lactation length and determination of appropriate off-takes and evaluation of economic viability of various stocking rates.

2010
Scholtz MM;, McManus C;, Mwai O;A, Seixas L;, Louvandini H. "Challenges and opportunities for beef production in developing countries of the southern hemisphere.".; 2010. Abstract

Livestock production faces specific challenges due to a rise in population numbers, urbanization and economic development in the developing world. A substantial increase in demand for meat in these countries will offer larger market opportunities for livestock producers. Developing countries from the southern hemisphere are characterized by a highly dualistic beef cattle sector with communal, subsistence or small scale farmers and large commercial farmers co-existing. Whereas the off-take from the commercial sector is high, the off-take from the other sectors is still low in certain regions. Global warming is expected to have a negative effect on the beef production environments of these countries. By describing production environments it will be possible to identify genotypes that are adapted to the environment. Tools are needed to overlay geo-referenced data sets onto the different environments in order to quantify them. Gene or marker assisted selection may play an important role in selection for disease and parasite resistance or tolerance, since it is difficult to measure these traits directly. Strategies that utilize EBVs derived from genomic analyses (genomic EBVs), together with conventional mixed model methodology, may speed up the process of breeding animals with higher and more efficient production. Research into methane production will also have to be stimulated. Up to 27 more results found for "MWAI O"

Haile A;, Duguma G;, Mirkena T;, Tibbo M;, Iñiguez L;, Rischkowsky B;, Mwai OA;, Wurzinger M;, Sölkner J. "Designing and implementation of community-based breeding programs for adapted local sheep breeds in Ethiopia."; 2010.
Ojango JM;, Panandam JM;, Bhuiyan AKFH;, Khan MS;, Kahi AK;, Imbayarwo-Chikosi VE;, Mwai OA. "Higher education in animal breeding in developing countries–challenges and opportunities."; 2010.
Haile A;, Duguma G;, Mirkena T;, Tibbo M;, Okeyo AM;, Iñiguez L;, Wurzinger M. "Indigenous Knowledge in Animal Management: Essential for Designing Community Based Sheep Breeding Programs.". 2010.Website
Ojango, JMK; Okeyo AM; RJEO. The Kenya Dual Purpose Goat development project.; 2010.
Okeyo AM;, PERSLEY G;, Kemp SJ. "Livestock and Biodiversity: The Case of Cattle in Africa."; 2010. Abstract

Africa is home to diverse and genetically unique ruminant livestock and wildlife species. The continent, however, faces huge food security challenges, partly due to low productivity of the livestock. As a centre of cattle domestication, Africa hosts genetically unique cattle, being products of generations of co-evolution with diverse people, each selecting for different attributes under different production systems and environments. Over millennia, this diversity of purpose has led to rich and unparalleled blends of indigenous and exotic cattle. Different parasites and pathogens, whose vigour has been buoyed by variable but generally favourable tropical conditions, have coevolved and served as critical drivers, making African cattle some of the world’s most scientifically interesting and valuable populations. This diversity is being lost at an alarmingly rate, and insitu conservation will not significantly save it These cattle can potentially provide adequate food and income to their keepers. First their genetic and phenotypic diversity should be understood, and then carefully tailored to specific production systems to improve their productivity. To realistically conserve these cattle, for which no conservation plans currently exist, available modern bio- and information technologies are needed to assemble and analyse complex sets of information on them. As the climate and pathogens all change, by smartly conserving (ex-situ) those at risk the genetic attributes critical for the world’s future food security challenges would be saved. This paper discusses the diversity of the African cattle and the need for their system-wide characterisation in order to allow their keepers to cope with the changing system, and minimise the loss of these unique genotypes.

Duguma, D; Mirkena HIOAM; TRSWT; A; L;. Participatory approaches to investigate breeding objectives of livestock keepers.; 2010. Abstract

There are distinct breeds suitable for diverse purposes in the different production environments or ecological zones. Farmers in different production systems have different trait preferences and the strategies followed by them are also as diverse as the agro-environments within which they operate. In order to design a viable breeding plan, farmers’ preferences for the different traits need to be investigated. In this paper available tools and methods for defining livestock breeding objective traits are described, discussed and comparisons among them are made. The reviewed tools were: participatory rural appraisal (PRA), choice experiments, ranking of animals from own flock/herd and ranking of others animals. Each methodology may be appropriate to specific situation; however, it is recommended that a combination of approaches be used to precisely capture the breeding objective traits of livestock producers. Elucidation of objective traits using the tools with active involvement of producers can result in appropriate livestock genetic improvement that is well grounded in practical reality and truly reflects owners’ preferences.

Bett RC, Johansson K, Zonabend E, Malmfors B, Ojango J, Okeyo M, Philipsson J. "Trajectories of Evolution and Extinction in the Swedish Cattle Breeds.". 2010. Abstract

An assessment of the current status and possible future dynamics of the domestic animal species is a critical step in the management of Animal Genetic Resources (AnGR). Permanent extinction of livestock breeds is considered to be the main reason for the loss of genetic diversity (Scherf, 2000). So far, the pace of the extinction process of livestock breeds has outstripped the creation of new breeds leading to a remarkable loss of genetic diversity (Gandini et al., 2004). The FAO’s Global Databank for AnGR predicts the loss of breeds at one breed per month (DAD-IS web). In this paper, the terms evolution and extinction are defined and illustrated using examples from the Swedish cattle breeds. Thereafter, the dynamics of the Swedish cattle breeds mentioned in DAD-IS and the status given as regards their endangerment/extinction are described. In addition, an analysis on the actual situation was conducted, to verify whether the breed is really endangered, extinct or has just evolved in one way or another for sustainable use.

2009
Menjo DK, Okeyo AM, Ojango JM. "Analysis of early survival of Holstein-Friesian heifers of diverse sire origins on commercial dairy farms in Kenya.". 2009. Abstract

The use of imported semen within the Holstein-Friesian cattle population in Kenya has contributed to increased milk production per cow, however, information on how this has impacted on functional traits, particularly early life survival and reproductive performance is scarce. This study evaluated age at first calving (AFC), survival to age at first calving, and survival to four years of age using survival analyses techniques, in Holstein-Friesian cattle on four dairy farms in Kenya. The heritability estimate obtained for AFC was 0.15 +/- 0.06 for an average AFC of 1058 days. Animals sired by New Zealand and Australian born bulls had the earliest average AFC (907 days). On average, 25% of all the heifers born were culled prior to attaining a first calving, while 34% were culled prior to four years of age. Though the highest proportion of losses was due to unspecified reasons, the relative risk of being culled was highest when an animal had a specific disease, and the first 60 days of life were the most critical for survival. Daughters of sires from South-Africa and Israel tended to have better survival rates than those sired by bulls originating from other regions. Unfavourable selection towards animals sired by Kenyan born bulls was evident. The economic implications of the high rate of early mortality need to be evaluated in order to assist livestock producers make informed decisions on choice of sires for breeding.

Galukande E;, Mulindwa, H; Wurzinger MAO; SM; J, Wurzinger M;, Mwai J, Solkner J. "Breed diversification in south western Uganda: characterization of a new cattle farming system."; 2009. Abstract

keeping different genotypes (Holstein-Friesians or their crosses and pure Ankole) is emerging in South Western Uganda. In this system the Ankole, cattle are being crossed with Holstein-Friesian and the two genotypes are being kept in separate herds on the same farm. This is in response to the rapidly growing population, new land policies that favour individual land ownership [1, 2] high demand of livestock products in the urban centres and improved rural infrastructure. As part of a larger research program that aims at evaluating the ecological and economic sustainability of the new pastoral systems, a survey was undertaken of sixteen farmers selected from 3 sub-counties in Kiruhura District in South West Uganda. Two sets of detailed structured questionnaires were used to collect information from the farms. The 1st set was administered at the beginning of the study in April 2007, and the 2nd one was administered on a monthly basis for a period of the last 12 months. On each farm visit performance traits such as milk yield (MY), heart girth measurement (HG) and Body Condition Score (BCS) of the animals were recorded. Comparative MY, BCS and body weight performance for mature cows for the different genotypes are considered here. Majority (53.3%) of the farmers interviewed stated that they kept the two cattle types (genotypes) because the crossbreds gave them more marketable milk, while the Ankole provides security in case diseases or prolonged drought affected the crossbreds. Another group (19.9%) stated that they still prefer to keep Ankole cattle besides the crosses because they are hardy, while others (13.3%) stated that they kept Ankole for beef production because they were easier to sell off for this purpose and the crosses for milk production. Another 13.3% stated that the crossbreds were kept for income through milk sales and Ankole were kept for cultural reasons.

Fridah L;G, Isabelle B;, Job L;, John M;, Henry M;, Joshua A;O, Okeyo AM. "A cost-benefit analysis of seced in-vitro fertilization embryo transfer in Kenya."; 2009.
Maciel S;, Mwai OA;, Amimo JO;, Moyo S;, Scholtz M;, Neser F;, Martins M. "Environmental descriptors influencing performance of the Nguni ecotypes."; 2009.
Mulindwa H, Galukande E, Wurzinger M, Mwai OA, Sölkner J. "Modelling of long term pasture production and estimation of carrying capacity of Ankole pastoral production system in South Western Uganda.". 2009. Abstract

The Ankole pastoral production system in South Western Uganda is based on grazing without supplementary feeding. A stochastic simulation model was developed to determine the dynamics of pastures grazed by Ankole cattle and their Holstein Friesian crosses and the carrying capacity (CC) of the livestock grazing system. The model used the concept of rain use efficiency which relates pasture production to rainfall. A cross sectional study was carried out on 16 selected farms and data on number of animals, sex, age group and size of available grazing land was collected. The similarity between the results of the simulation rainfall runs and field data are considered to be satisfactory. The overall annual forage production is 3905 ± 72kg/ha. The lowest CC (5.65 ± 0.75) occurs in long dry season (June to August) while the highest CC (1.41 ± 0.06 ha/TLU) occurs in short rain season (September to November). Annual carrying capacity ranges between 1.88 and 2.08 ha/TLU with an overall mean of 1.95 ± 0.04 ha/TLU. Sixty three (63%) percent of the surveyed farms have stocking rates that are higher than the CC throughout the year while the rest are overstocked in the dry seasons of the year. The results indicate that CC is dynamic and its variability is more pronounced within the year than between years. In response to seasonal CC, the major point of intervention in regard to reduction of actual stocking rates could be done in May shortly before the start of the long dry season. For Ankole pastoral system to be sustainable, the stocking rate should not go below 1.41 ha/TLU.

Wurzinger M, Okeyo AM, Semambo D, Solkner J. "The sedentarisation process of the Bahima in Uganda: An emic view.". 2009. Abstract

The traditional lifestyle of nomadic pastoralists is vanishing rapidly, because of human population growth which often leads to land scarcity or political pressure on pastoralists to settle. The sedentarisation of the Bahima pastoralists in Western Uganda started in the 1940s and is still going on. In this study former nomadic cattle keepers, who have settled with their families, were interviewed in order to document the decision to settle and the subsequent changes in the lifestyle of these people. All interviewees expressed their satisfaction with their sedentary life. Land scarcity, access to education, better availability of water and the possibility of crop production were given as factors for settlement. The decisions were influenced by Christian missionaries, the government and friends.

Menjo DK, Bebe BO, Okeyo AM, Ojango JMK. "Survival of Holstein-Friesian heifers on commercial dairy farms in Kenya.". 2009. Abstract

Herd health and adaptability are of concern in dairy herds in the tropics because of persistent exposure to multiple stresses of low quality and quantity feeding, heat stress, high disease and parasitic incidences, poor husbandry and breeding practices. The combined effect of mortality and culling is estimated to cause losses of 40 to 60% of dairy heifers conceived or born in the tropics. This study applies survival analysis techniques to evaluate important factors influencing survival to first calving in Holstein-Friesian cattle raised on large-scale farms in Kenya. On average, 25% of all the heifers born were culled prior to reaching first calving. Though the highest proportion of losses was due to unspecified reasons, the relative risk of being culled was highest when an animal had a specific disease, and survival was most critical within the first 60 days of life. Daughters of sires from South Africa and Israel tended to have better survival rates than those sired by bulls originating from other regions. When selecting sires for breeding, it is important for farmers in the tropics to consider information related to survival and fertility for stressful production systems.

2008
Mburu J;, Karanja-Lumumba T;, Mwai OA. "Determinants of transaction costs in group-based breeding approaches: the case of dairy goats in the eastern Kenyan highlands."; 2008. Abstract

Exotic dairy goats were introduced in the eastern Kenyan highlands by FARM- Africa through a group-based approach about a decad e ago. Interested farmers had to organize themselves into legally recognized farmers’ groups which would then register with dairy goat breeding stations est ablished by this international non-governmental organization. It was only after su ch a collective action process that individual farmers accessed Toggenburg bucks ( imported from Europe), local markets for kids and milk, and dairy goats’ h usbandry techniques. This process made local communities incur several catego ries of transaction costs whose huge magnitudes hindered some poor farmers fr om participating in the dairy goat breeding activities. It is also expected that transaction costs were induced by transaction attributes, e.g. asset speci ficity, bounded rationality, etc. that are to a large extent dependent on farmers’ so cio-economic conditions and farm characteristics. The relevance of these factor s in determining magnitudes of transaction costs in group-based small ruminants br eeding approaches has not been so far extensively investigated. This is parti cularly so in the developing world. Using a case study of 165 randomly selected farmers in the Kenyan highlands’ Meru District this paper analyzes determ inants of transaction costs of farmers’ participation in dairy goat breeding activ ities. The paper uses econometric analyses to generate these factors and derives important policy implications that would positively influence future targeting strategies in dairy goat breeding programmes in Kenya.

Ndumu DB, Baumung R, Hanotte O, Wurzinger M, MA O, H J, Kibogo H SJ. "Genetic and morphological characterisation of the Ankole Longhorn cattle in the African Great Lakes region.". 2008. Abstract

The study investigated the population structure, diversity and differentiation of almost all of the ecotypes representing the African Ankole Longhorn cattle breed on the basis of morphometric (shape and size), genotypic and spatial distance data. Twentyone morphometric measurements were used to describe the morphology of 439 individuals from 11 sub-populations located in five countries around the Great Lakes region of central and eastern Africa. Additionally, 472 individuals were genotyped using 15 DNA microsatellites. Femoral length, horn length, horn circumference, rump height, body length and fore-limb circumference showed the largest differences between regions. An overall FST index indicated that 2.7% of the total genetic variation was present among sub-populations. The least differentiation was observed between the two sub-populations of Mbarara south and Luwero in Uganda, while the highest level of differentiation was observed between the Mugamba in Burundi and Malagarasi in Tanzania. An estimated membership of four for the inferred clusters from a model-based Bayesian approach was obtained. Both analyses on distance-based and model-based methods consistently isolated the Mugamba sub-population in Burundi from the others.

Galukande E;, Mulindwa HE;, Wurzinger M;, Mwai AO;, Sölkner J. "On-farm comparison of milk production and body condition of purebred Ankole and Crossbred Friesian–Ankole cattle in south western Uganda."; 2008. Abstract

Increasing land pressure due to the rapidly growing population, growing demand for livestock products in urban centres and new land policies in Uganda are changing the life styles of the hitherto extensive grazers of the long horned Ankole cattle in south western Uganda. A production system where two separate herds are kept on one farm, a pure bred Ankole herd and a herd of Friesian - Ankole crosses is emerging. The Friesian-Ankole crosses are kept as a source of milk, most of which is sold to generate income. The Ankole are kept for cultural reasons, a buffer against shock in case of prolonged drought and disease outbreak and for income through sale of live animals. This study investigates the life cycle efficiency of the different genotypes on farm. Eighteen farmers have been selected and in each farm up to 30 animals have been selected per herd covering the complete age /sex range of the herd. During the selection the crossbred status was evaluated based on information from the farmer and phenotype. All selected animals were tagged. The animals are currently followed up on monthly intervals and this will last for a period of two years. During the visits body condition, tick count, health status, milk production of cows, growth parameters in young animals (weight approximated by the measurement of chest circumference) are recorded. Other information collected includes disease and parasite control measures (methods and costs involved), labour costs, calving dates, any supplementation, rainfall and temperature patterns. This paper discusses preliminary results on performance traits of the different genotypes for the first year of the study.

Nimbkar C, Gibson J, Okeyo M, Boettcher P, Soelkner J. "Sustainable use and genetic improvement.". 2008. Abstract

Sustainable use of animal genetic resources for agriculture and food production is proposed as the best strategy for maintaining their diversity. Achievement of sustainable use would continue to support livelihoods and minimize the long-term risk for survival of animal populations. The concept of sustainable use has economic, environmental and socio-cultural dimensions. Sustainable use of animal genetic resources also contributes to food security, rural development, increasing employment opportunities and improving standards of living of keepers of breeds. Supporting the rearing of breeds through better infrastructure, services, animal health care, marketing opportunities and other interventions would make a significant contribution to the sustainable use of animal genetic resources. Sustainable use envisages the use and improvement of breeds that possess high levels of adaptive fitness to the prevailing environment. It also encompasses the deployment of sound genetic principles for sustainable development of the breeds and the sustainable intensification of the production systems themselves. Sustainable use and genetic improvement rely on access to a wide pool of genetic resources. Genetic improvement programmes need to be considered in terms of national agriculture and livestock development objectives, suitability to local conditions and livelihood security as well as environmental sustainability. Genetic improvement can involve choice of appropriate breeds, choice of a suitable pure breeding or crossbreeding system and application of within-breed genetic improvement. The choice of appropriate breeds and crossbreeding systems in developed countries has been a major contributor to the large increases in productivity, and has benefited greatly from the fact that developed country animal genetic resources are well characterized and relatively freely exchanged. Where proper steps have been followed by careful assessment of demand, execution, delivery, impact and cost-benefit analyses, successful within-breed improvement has been realized within indigenous populations in developing countries. Breeding objectives and programmes for subsistence oriented and pastoralist systems are likely to be entirely different from conventional programmes. Crossbreeding has been most successful where it is followed by a rigorous selection programme involving livestock owners' participation and substantial public sector investment in the form of technical support. In any genetic improvement programme, inbreeding needs to be monitored and controlled. Within-breed genetic improvement is normal practice in the developed world, and has become a highly technical enterprise, involving a range of reproduction, recording, computing and genomic technologies. Emerging genomic technologies promise the ability to identify better, use and improve developing world animal genetic resources in the foreseeable future. Useful systems can, however, be established without the need for application of advanced technology or processes.

2007
2006
Kugonza, DR; Jianlin KGH; HMOH; O; A. Microsatellite DNA polymorphism of the Long Horned Ankole cattle in Uganda.; 2006. Abstract

Nineteen microsatellite markers were used to investigate the genetic diversity, phylogenetic relationships and herd structure of Ugandan Ankole cattle. A total of 304 animals from 8 herds in Mbarara District were characterised. Across all loci, 200 alleles were observed. A high mean number of alleles (MNA) per locus, ranging from 5.89 to 6.79 per herd, was observed. Polymorphic information content (PIC) ranged from 0.403 (ILSTS013) to 0.817 (ILSTS036), with an overall mean of 0.688. The average observed heterozygosity (Ho) was highest in Kaibanda (0.727) and lowest in Kituuha (0.648), while the expected heterozygosity (He) ranged from 0.722 (Nshaara) to 0.664 (Kituuha). Significant deviations from Hardy-Weinberg proportions were observed on 8 loci, however, all 152 loci-herd combination tests were in equilibrium after Bonferroni correction. FST estimates for all loci and between all herds were highly significant (P<0.001), suggesting little if any gene flow between the herds. For all herd pairs, FST values were generally low, with an overall mean of 0.041 + 0.08. Significant (P<0.01) inbreeding effect (FIS) was detected in the Nasasira herd. The mean number of migrants per generation (Nm) across all herds was 3.82. Phylogenetic analysis showed that herds from the same geographical counties grouped together. These results illustrate at the molecular level the fairly wide genetic variation found among the Ankole herds studied and therefore the potential for genetic improvement of these herds.

Wurzinger M;, Ndumu D;, Baumung R;, Drucker AG;, Okeyo AM;, Semambo DK;, Sölkner J. "TitleAssessing stated preferences through the use of choice experiments: valuing (re)production versus aesthetics in the breeding goals of Ugandan Ankole cattle breeders.".; 2006. Abstract

Home Help Thesaurus Okeyo AM Advanced Search Tools Marked records Mark this record Search History Print this record Email this record Export citation Download MARC21 Record Related literature •Other articles by these authors on Google Scholar •Search Google for related articles • Order from the British Library (Artweb-registered users) •Order from the British Library (public order form) •Find this book on Amazon •Search for this title in NRC-CISTI •Add to … Tag in Delic.io.us Tag in Connotea Document details TitleAssessing stated preferences through the use of choice experiments: valuing (re)production versus aesthetics in the breeding goals of Ugandan Ankole cattle breeders. AuthorsWurzinger, M.; Ndumu, D.; Baumung, R.; Drucker, A. G.; Okeyo, A. M.; Semambo, D. K.; Sölkner, J. Book chapter; Conference paperProceedings of the 8th World Congress on Genetics Applied to Livestock Production, Belo Horizonte, Minas Gerais, Brazil, 13-18 August, 2006 2006 pp. 31-09 Conference TitleProceedings of the 8th World Congress on Genetics Applied to Livestock Production, Belo Horizonte, Minas Gerais, Brazil, 13-18 August, 2006. ISBN85-60088-01-6 URLhttp://www.wcgalp8.org.brRecord Number20063170234 Abstract In this study 240 cattle keepers in four regions in Southwestern Uganda were interviewed and a hypothetical choice experiment was conducted. Each choice-set consisted of 2 profiles with 6 attributes with 2 levels. The attributes for cows were horns, coat colour, size, fertility, milk yield and price. The attributes for bulls were horns, colour, muscularity, temperament, dam's performance and price. Each person got 6 choice-sets for bulls and 6 for cows. Differences in the production systems were reflected in the varying selection criteria. In cows production traits were very important and in bull

OKEYO DRMWAIALFAYO. "Mwacharo, J.M., Okeyo, A.M., Kamande, G. K., and Rege, J.E.O. 2006. The Small East African Shorthorn Zebu cattle in Kenya I. Linear Body Measurements.". In: Tropical Animal Health and Production. 38: 65-74. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2006. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Ndumu D., Baumung R., Wurzinger M., Drucker A., Okeyo M., Semambo D., and S.". In: Conference on International Agricultural Research for Development, Deutscher Tropentag 2006,University of Bonn, Bonn, Germany, October 11-13, 2006. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2006. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Wurzinger, M. Ndumu, D., Baumung, R. A.M Okeyo, D.K. Semambo, A. Drucker andJ. S.". In: Proceedings of the 8th World Congress on Genetics Applied to Livestock Production, 13th to 18th of August, 2006, Belo Horionte, Brasil. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2006. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
2005
Kugonza DR;, Okeyo AM;, Mutetikka D;, Mpairwe DR;, Nabasirye M;, Kiwuwa, GH; Hanotte O, Hanotte O. "Ankole cattle breed of Uganda: functions and criteria used in identification, selection and parentage assignment by herdsmen."; 2005.
Mwai AO;, Malmfors B;, Andersson-Eklund L;, Philipsson J;, Rege JEO;, Hanotte O;, Fulss R. Capacity building for sustainable use of animal genetic resources in developing countries. ILRI-SLU Project progress report for the period 1999-2003.; 2005. Abstract

To promote a sustainable and improved use of animal genetic resources in developing countries, ILRI in collaboration with the Swedish University of Agricultural Sciences (SLU), and supported by Sida (Sweden), launched a project training the trainers, for national agricultural research systems (NABS) scientists (national university teachers and researchers) in developing countries. The main objectives of the project were to strengthen subject knowledge and skills, and teaching and communication skills of scientists teaching and supervising students in animal breeding and genetics at least up to MSc level. Other objectives were to catalyse curriculum development, stimulate contacts and networking, and to develop computer-based training resources relevant for use by NARS scientists in teaching and research. This capacity building project was an integrated component of the ILRI research agenda on Animal Genetic Resources. It was also an endeavour by ILRI to collaborate with and strengthen NARS institutions and scientists. The project was initially planned to include regions in sub-Saharan Africa, SouthEast Asia and South Asia, resources allowing, Latin America. The activities in each region or sub-region included: planning activities (questionnaire, country visits, planning workshop), training course for university teachers and researchers (three weeks, combining training in animal genetics/breeding and teaching methodologies), development of an Animal Genetics Training Resource' (on CD-ROM, and later also on the Web), follow-up activities, including impact assessment (questionnaires and follow-up workshops). During the period 1999 to 2003 a full round of activities was completed for sub Saharan Africa. The training course was conducted for Eastern/Southern Africa (20 scientists from 10 countries) and for Western/Central Africa (18 scientists from 10 countries). The planning and follow-up workshops were performed jointly for the region. In addition, the planning activities and training course (18 scientists from 9 countries) were completed for South-East Asia. Version 1 of the computer-based training resource (CD) was released in late 2003. The resource contains modules, i.e. core texts on issues related with farm animal genetic resources, quantitative methods and teaching methods, and Resources containing case studies, breed information, maps, examples, exercises, video clips, a glossary and a virtual library. It also contains references to web links, books and other CDs. The participants found the training courses very useful; average score for Overall Impression was 8.2 (scale 1-9). They also indicated that the computer-based training resource would be a valuable tool both in teaching and in research, but had not yet had a chance to explore and use it fully. Impact assessments for Africa (questionnaire and follow-up workshop) showed that the training course has already had a substantial impact in many of the participants. Impact assessments for Africa (questionnaire and follow-up workshop) showed that the training course has already had a substantial impact in many of the participants' home institutions, both on teaching methods and on course content. Students have shown more interest and understanding of animal breeding and genetics. The impact on participants' research has been just as large; more focus on research involving indigenous animal genetic resources, improved research proposal writing, research methodologies and science communication skills, and also more efficient supervision of students' research. Many of the participants have actively disseminated materials and experiences from the course to colleagues in their home institutions. Other important outcomes have been increased contacts and an open e-mail network `Afrib' formed by the African course participants. The project also strengthened Swedish knowledge and expanded PhD activities on animal genetic resources in developing countries; these were valuable `spin-off effects' of the project. The 'training the trainers' approach adopted in the ILRI-SLU project seems to be a good model for effective capacity building to promote a sustainable use of animal genetic resources in developing countries. The approach was innovative and has functioned well; the model could be extended to other disciplines. Furthermore, linking universities from the North to those of the South, with a CGIAR institute playing both a facilitating and catalytic role was beneficial. The project will now proceed to South Asia and version 2 of the computer-based training resource will be developed. More impact analyses will also be performed.

Mensah GA;, Okeyo AM. "Continued harvest of the diverse African Animal Genetic Resources from the wild through domestication as a strategy for sustainable use. A case of the larger grasscutter (Thryonomys swinderianus)."; 2005. Abstract

With the ever-increasing human population, th e need for efficient utilization of natural resources will always remain a challenge for both scientists and development workers. Land sizes are constantly decreasing with each new generation inheriting land, making it difficult to keep cattle or larger ruminants in high potential mixed crop-livestock production systems in the eastern highlands of Kenya. Government services are equally dwindling and it can no longer maintain breeding studs in research centres and Government farms, most of them having been sub-divided and given out. FARM-Africa has been implementing a community- based goat improvement programme whose purpose is to improve the productivity of the local goats through better management, develop a more intensive goat milk and meat production system for farmers in areas under land and population pressure which are increasingly less able to sup port cattle. Toggenburg dairy goats have been imported and used as improver breed in crossbreeding with th e local goats. This paper discusses the role of farmer groups in breed improvement and development. Also discussed is the role of improved goat genotypes in improving the livelihoods of the rural resource poor farm families as well as the problems that have to be overcome when such initiatives are being undertaken.

Wurzinger M;, Ndumu D;, Baumung R;, Drucker A;, Okeyo AM;, Semambo DK;, Sölkner J. "Indigenous selection criteria in Ankole cattle and different production systems in Uganda."; 2005. Abstract

Ankole cattle are kept in South-Western Uganda, which is part of the cattle corridor, an area that was traditionally communal grazing land and pastoral systems. Currently, the pastoral system is undergoing a dramatic change due to land shortage, market forces and political reasons. Four different regions were identified and 30 farmers each were interviewed. In the two areas with more traditional systems main selection criteria in cows and bulls are body characteristics (coat colour, horn size and colour). Here, herds are generally larger and cattle are the main source of income. During the dry season, some families still move with their cattle in search of water and pasture. In the two other areas farmers are sedentary and both livestock and crop production contribute to the income. Due to increasing population pressure the trend is to keep few but more productive animals. Selection focuses more on production traits like milk yield, growth and fertility. Crossbreeding with exotic cattle breeds is becoming more popular. Farmers mention that Ankole have advantages over exotic breeds in terms of disease resistance, heat tolerance, lower feed requirements and the beauty of the animals. The study reported here was carried out to describe the production system with a focus on indigenous knowledge and the documentation of changes. Implications of the on-going changes on future development and improvement interventions are also discussed.

Ahuya, CO; Okeyo AM; MFM. Productivity of cross-bred goats under smallholder production systems in the Eastern highlands of Kenya1.; 2005. Abstract

Dairy goats have become increasingly popular among smallholder mixed crop-livestock farmers. Their profitability will determine their growth within smallholder production systems. A survey was carried out in 114 farmer groups, representing 435 goat herds and 1676 goats. Data on reproductive and growth performance, milk production and flock dynamics (deaths, births, and sales) were collected between October 2001 and September 2003. The genotypes involved were the local East African goat, pure Toggenburg (T) and their crosses (F1) and 3/4T. Using the Livestock Productivity Efficiency Calculator (LPEC) as an input framework, herd structure, gross margins and herd growth were calculated based on feed efficiency. The parameter used was the annual total value of off- take per carrying capacity unit (CCU), which was defined as a standard livestock unit consuming 100 Mega joules of metabolisable energy (ME) per day. The goat enterprise proved to be profitable Annual gross margins of over US $259 were recorded indicating that dairy goat enterprises under smallholder production systems can be profitable,(the USD exchange rate at March 2005 was 77 Kenya shillings to US $1)

Ndumu D;, Wurzinger M;, Baumung R;, Drucker A;, Mwai O;A, Solkner J. "Size versus beauty: Farmers' choices in ranking experiment with African Ankole long-horned cattle."; 2005.
OKEYO DRMWAIALFAYO. "Ahuya, C.O., Okeyo, A.M, Mwangi-Njuru and Peacock, C. 2005. Developmental challenges and opportunities in the goat industry: The Kenyan experience.". In: Small Ruminant Research 60:197. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2005. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Ndumu, D., Wurzinger, M., Baumung, R., Drucker, A., Okeyo, A., M., Semambo, D.,K., S.". In: 55th Annual Meeting of the European Association for Animal Production (EAAP), Uppsala, Sweden, 5. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2005. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Okeyo A. M., Mosi, R.O. and J.E.O. Rege. 2005. The coat colour: Its relevance and influence on reproductive and productive performance of Kenya Boran cows.". In: The Kenya Veterinarian. 28:37-45. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2005. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Wurzinger, M., Ndumu, D., Baumung, R., Drucker, A., Okeyo, A., M., Semambo, D.,K., S.". In: All African Conference, Arusha, Tanzania, 20 . Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2005. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Wurzinger, M., Ndumu, D., Baumung, R., Drucker, Okeyo, A.M. and S.". In: International Conference on Agricultural Research for Development: European Response to Changing Global Needs, 27.4.-29.4. 2005, Z. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2005. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
2004
Baltenweck I;, Ouma R;, Anunda F;, Mwai O;A, Romney D. "Artificial or natural insemination: the demand for breeding services by smallholders.".; 2004. Abstract

Different types of breeding services are available to the Kenyan smallholder farmers. An important question is whether farmers choose the service, or they are constrained in their choice. Assessing the demand for breeding services is crucial for planning purposes since it will help in identifying the constraints faced by smallholders in the aftermath of agricultural liberalisation policies of the 1990’s. Household and community surveys were conducted in March and April 2004 in three different farming systems of the Kenyan Highlands. The study of 300 smallholder cattlekeepers found that while 54% prefer artificial insemination (AI) to natural (bull) service, 81% actually use natural service, suggesting a sharp contrast between actual use and expressed preferences. Even in intensive dairy systems (represented by Ndia division in Kirinyaga district), the majority of smallholders use natural service. Farmers prefer AI service in view of its ability to maintain and/or upgrade their dairy herd but main constraints to use of AI services are low availability and perceived high costs. This study shows that the observed high use of natural service over AI recorded in previous studies may not reflect farmers’ choice but the unavailability of the Demand for breeding services by smallholders alternative service types, cost considerations, information gaps and misinformation amongst farmers, historical reasons among other constraining factors. Some recommendations for breeding policy reform are made.

Ahuya CO;, Okeyo AM;, Peacock C. "Development of dairy goat industry in Kenya: A case study."; 2004.
Mwai OA, Mitaru B;, Rosati A;, Tewolde A;, Mosconi C. Development of livestock production systems in Africa..; 2004.Website
OKEYO DRMWAIALFAYO. "Muasya T.K., R.O. Mosi, J.W. Wakhungu and A.M. Okeyo. 2004. A study of the reproductive performance of the dairy cattle heard at the University of Nairobi Veterinary Farm, Kanyariri.". In: The Kenya Veterinarian. 27: 106-. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2004. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
2003
OKEYO DRMWAIALFAYO. "Ahuya, C.O., A. M. Okeyo, A. Kitalyi, P. Mutia and F.M. Murithi. 2003. Farm-Africa Dairy goat and Animal Healthcare project: A successful case of agricultural research and sustainable development partnership.". In: A poster presented the Global Forum on Agricultural Research (GFAR) Conference, May 22nd-24, 2003, Dakar,Senegal. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2003. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Ahuya, C.O., A. M. Okeyo, R. O. Mosi and F. M. Murithi. 2003. Growth, survival and milk production performance of Toggenburgs and their crosses to East African and Galla goat breeds in the Eastern slopes of Mount Kenya.". In: Proceedings of an International Workshop on Small Ruminants Research and Dissemination, Embu,Kenya, February 3rd . Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2003. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Mwacharo J. M., Otieno C.J. and A.M. Okeyo. 2003. Haemoglobin and transferring (Beta-globulin) polymorphism in Indigenous Kenyan sheep breeds.". In: Bull. Anim. Hlth. and prod. in Africa. 51: 139-14. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2003. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
2002
W.O O. "Technology Transfer and the Innovative Process in Biomedical Sciences in the Developing World.". 2002. AbstractWebsite

Technology transfer may be defined as the conveyance of either a man-made tangible or intangible know-how from those who posses it to those who do not. Although the technology transfer encompasses great a many different types of activities, the transfer process can be examined according to six major elements, namely, the transfer item, the technology donor, the technology recipient, the transfer mechanism, the rate of diffusion of technology and the absorptive capacity of the recipient. These are several ways in which technology can be transferred from donor to recipient. Some of these mechanisms include turnkey operations, the technological enclave, licensing, joint ventures, patents, in house transfers to foreign subsidiaries, SImple emulation of a product or a process, direct purchase of naked technology, embodied technology/technological services, education abroad, site-visits and on training, international co-operative research efforts, meetings and seminars. Scientists from the developing world are involved at various levels in the process of technology transfer. In the process of participating in all these activities the innovative process may come into play. Medical "technology" implies understanding of the equipment and paraphernalia of medicine and the art and skill in using it. The International Laboratory for Research on Animal Diseases (ILRAD) and Kenya Medical Research Institute (KEMRI) Kenya Trypanosomiasis Institute (KETR!) amongst others have notably participated in the development of Bio-Medical technology at various levels. Contributions of various African Scientists in the development of techniques and methods of treatment and control of various diseases is outstanding and has been of great assistance to drug companies for the development of products. The output of Research and Development must be considered productive and may lead to development of new technologies or improvement or existing ones. Industries are the beneficiaries here as they produce products that are sold to final users, The patenting of such products or know-how should reflect the participation of third world Scientists. High level of technological awareness must therefore be created among researchers and scientists of the third world. A system that protects intellectual property rights that works must be created. Joint cooperative research projects between the third world scientists and scientist of the developed world should lead to the beginning of a breakthrough in the technological underdevelopment of these countries towards the year 2000 and beyond. While conferences, intensive seminars and workshops are to be encouraged even more, work well done must not end up in shelves as papers presented in high scientific conferences. Key words: Technology transfer, the innovative process, transfers item, technology donor, technology recipient. and technology diffusions

OKEYO DRMWAIALFAYO. "Ahuya, C.O. F.M. Matiri and A.M.Okeyo. 2002. Community-Based Goat productivity improvement in Central and South Meru Districts of Kenya: Characterisation of Farm Resources and capacities for keeping local goats or different grades of crossbred goats. In S.". In: Proceedings of the Second DFID Livestock Production Programme Link Project (R7798) Workshop for Smallstock Keepers. Sokoine University of Agriculture, Morogoro, Tanzania. 8-10 January 2002. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2002. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Ahuya, C.O., Okeyo, A.M., Mosi R.O., Murithi F.M. and Matiri F.M. 2002. Body weight and preweaning growth rate of pure indigenous, Toggenburg goat breeds and their crosses under smallholder production systems in Kenya.". In: Proceedings of . Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2002. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Badamana M.S, J.W. Wakhungu, Okeyo .A.M, Shaabani .S. (2002). Drought monitoring systems checking the effect of livestock production in the northern region of Kenya: A case study of Isiolo and Wajir districts.". In: A paper presented at the scientific conference of Kenya Veterinary Association, held at Kakamega,Kenya 24-26/4/2002. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2002. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Malmfors, B., M. Smalley, J. Philipsson, H. Ibrahim, Anderson-Eklund, O. Mwai, N. Mpofu and J.EO. Rege. 2002. Capacity building for Sustainabble Use of Animal Gnetic Resources in Developing Countries- Anew Approach.". In: World Congress on Genetics Applied to Livestock Production, France, August 2002. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2002. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Mwacharo J. M., Otieno C.J., Okeyo A.M. and Aman R.A. 2002. Characteristics of Indigenous Fat-tailed and Fat-rumped Hair sheep in Kenya: Diversity in Blood Proteins.". In: Tropical Animal Health and Production. 34(6) 515-524. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2002. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Mwacharo J. M., Otieno C.J., Okeyo A.M. and Aman R.A. 2002. Genetic variations between indigenous fat-tailed sheep populations in Kenya.". In: Small Ruminant Research. 44(3) 173-178. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2002. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Ogara W.O. and A.M. Okeyo. 2002. Technology transfer and innovative process in Biomedical sciences in Developing world.". In: Discovery and innovations. 14(3/4):155-160. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2002. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
2001
Ahuya CO;, Okeyo, A.M; Hendy. C, Hendy. C. "Community-based Livestock Improvement: A Case Study Of The Farm-africa."; 2001.
OKEYO DRMWAIALFAYO. "Ahuya, C.O., Okeyo, A.M. and C. Hendy. 2001. Community-based livestock improvement: A case study of the Farm-Africa.". In: 28th Scientific Conference, Tanzania Society of Animal Production (TSAP), 7th-9th August 2001, Morogoro, Tanzania. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2001. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Badamana M.S., Okeyo A. M. Mahboub M. and Shaban (2001). Drought monitoring systems, indicators, interventions and impacts on livestock production in the Kenya arid and semi-arid lands. A case for Baringo and Samburu districts.". In: A paper presented at the scientific conference of Animal Production society of Kenya, held at Egerton University 7-8/3/2001. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2001. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Badamana S.M., Okeyo A.M., Mahboub M. and Shaabawi S. 2001. Drought monitoring systems: Indicators, Interventions and Impacts on livestock production and in the Kenya arid and semi arid lands: A case for Baringo and Samburu districts.". In: Proc. Annual Animal Production Society of Kenya (APSK Symposium 2001), Held atThe Egerton University, Njoro, Kenya, 7-8 March, 2001. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2001. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Muchina Munyua S.J; Okeyo A. M. and Mbai K. 2001. Livestock marketing in pastoral areas in the face of the broad government policy of liberalization and privatization and prevailing production constraints: The need to re-orient the prevailing livestock ma.". In: Proc. Annual Animal Production Society of Kenya (APSK Symposium 2001), Held at The Egerton University, Njoro, Kenya, 7-8 March, 2001. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2001. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Okeyo A. M. and Mosi, R.O. 2001. Lactation characteristics of Dutch-Friesian cows under semi-arid conditions in Kenya: 305-day milk yield and lactation length.". In: The Kenya Veterinarian. 21:37-42. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2001. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
O PROFMOSIREUBEN, OKEYO DRMWAIALFAYO. "Okeyo, A.M. and R.O. Mosi (2001). Lactation characteristics of Dutch Friesian cows under semi-arid conditions of Kenya: 305-day milk yield and lactation length.". In: The Kenya Veterinarian. 21-37. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2001. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Okeyo, A.M., J.N. Thendiu and C.O. Ahuya. 2001. The place and role of the goat in livelihood improvement and poverty reduction in Kenya: Potential and some indicative achievements.". In: Annual Project Planning Workshop, Livestock Productivity Project, Farm Africa-Dairy goat and animal Healthcare Project, Meru,. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2001. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
2000
OKEYO DRMWAIALFAYO. "A.M. Okeyo and R.A. Aman. 2000. Characterization of indigenous Kenyan fat-tailed and fat-rumped sheep breeds: Levels of diversity in blood proteins. In Proc. Biennial Scientific Conference of the Faculty of Veterinary Mediciene, University of Naorobi on A.". In: Biennial Scientific Conference of the Faculty of Veterinary Mediciene, University of Naorobi. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2000. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Okeyo, A.M. 2000. The role of crossbreeding in the development of a dual purpose goat for small-holder production systems in Kenya.". In: Workshop on Dairy goat Research & Production in Kenya: 20 Years on-Which way?, Held at The Garden Hotel, Machakos, Kenya, 11-12, October, 2000. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 2000. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
1999
Oluoch-Kosura W, Ariga ES, Waithaka MM, Kyalo AM. "Agricultural technology, economic viability and poverty alleviation in Kenya.". 1999. Abstract

The major challenges facing Kenya today are poverty and unemployment. About 50% of the rural population and 30% of the urban population live below the poverty line. With 80% of the population being rural the poverty problem is overwhelming. The country has been unable to generate adequate employment and wage employment has been declining over the recent past. While in the 1970s the growth rate of employment was about 4% per annum, in the current decade, the growth rate has been about 1.9% per annum, which is below the population growth rate estimated at about 3%. The country has also witnessed declining growth in income per capita. While in the 1960s per capita income grew at 2.6% p.a. this declined to 0.4% in 1980s. Between 1990 and 95 the decline was even more dramatic at negative 0.3% (Kenya, 1997). The poverty line is defined here as the value of consumption of food and non-food items below which individuals cannot afford the recommended energy intake plus a minimum allowance for non-food consumption. The poverty line has been estimated at about US$ 200 and 300 for rural and urban areas respectively (GoK, 1998). This translates to less than one US$ per day. Of Kenya’s total land area of 57.6 million hectares, 9.4 million or about 16% is classified as high and medium potential land for agriculture. The remaining area estimated at 84% makes up the arid and semi arid lands (ASALs). Out of the ASALs 48 million hectares, about 9 million hectares can support crop production, 15 million hectares is adequate for livestock production while the rest is dry and only useful for nomadic pastoralism. The ASAL supports about 20% of the population, 50% of livestock and 3% of current agricultural output and 7% of commercial output. ASALs have low natural fertility which are prone to compaction and vulnerable to erosion. The agriculture sector dominates the economy and contributes virtually to all the stated national goals including achievement of national and household food security, industrialization by year 2020 as well as provision of employment opportunities. Currently, agriculture accounts for about one-third of the gross domestic product, employs more than two-thirds of the labour force, accounts for almost 70% of the export earnings (excluding refined petroleum), generates the bulk of the country's food requirements and provides significant proportion of raw materials for the agricultural based industrial sector. Overall, the smallholder sub-sector contributes about 75% of the total value of agricultural output, 55% of the marketed agricultural output and provides just over 85% of the total employment in agriculture. The sector’s ability to contribute effectively to the national goals hinges on identifying and implementing measures which promote high and sustainable growth rate. Mellor (1990) asserted that agricultural productivity growth is normally the major source of sustained improvements in rural welfare. Three sources of agricultural growth can be identified in Kenya. One is the expansion of cultivated area. The second is substitution or switching towards higher valued commodities. The third is intensification. The first source of agricultural growth is currently extremely limited. The cultivable land available to open up has diminished over the years with rapidly rising population estimated at about 3% per annum to the extent that the land holdings are becoming sub-optimal economic units and there is ever increasing temptation to migrate to the marginal and fragile zone. Moreover, irrigation development which could help in increasing cultivable land has been very slow due to the seemingly high cost associated with it. Commodity substitution will contribute significantly to growth only if the input and output markets function in a way to allow the producers and the private sectors respond appropriately to the market signals. This is expected to occur if the on-going structural adjustment programmes succeed in limiting government intervention to its core functions (of public good nature) and allowing the private sector to take up the production, marketing and distribution role. Most agricultural growth will therefore come from the third source: increased output per unit land area. The realization of this growth potential will hinge on shifting rapidly from resource based to science and knowledge-based agriculture. The objective of this paper is to The sector’s ability to contribute effectively to the national goals hinges on identifying and implementing measures which promote high and sustainable growth rate. Mellor (1990) asserted that agricultural productivity growth is normally the major source of sustained improvements in rural welfare. Three sources of agricultural growth can be identified in Kenya. One is the expansion of cultivated area. The second is substitution or switching towards higher valued commodities. The third is intensification. The first source of agricultural growth is currently extremely limited. The cultivable land available to open up has diminished over the years with rapidly rising population estimated at about 3% per annum to the extent that the land holdings are becoming sub-optimal economic units and there is ever increasing temptation to migrate to the marginal and fragile zone. Moreover, irrigation development which could help in increasing cultivable land has been very slow due to the seemingly high cost associated with it. Commodity substitution will contribute significantly to growth only if the input and output markets function in a way to allow the producers and the private sectors respond appropriately to the market signals. This is expected to occur if the on-going structural adjustment programmes succeed in limiting government intervention to its core functions (of public good nature) and allowing the private sector to take up the production, marketing and distribution role. Most agricultural growth will therefore come from the third source: increased output per unit land area. The realization of this growth potential will hinge on shifting rapidly from resource based to science and knowledge-based agriculture. The objective of this paper is to

OKEYO DRMWAIALFAYO. "Okeyo A. M. and Mosi, R.O. 1999. Performance of Dutch-Friesian cows undersemi-arid conditions in Kenya: Reproductive performance and productive life.". In: Bulletin of Animal Health and Production in Africa. 47:. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1999. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
O PROFMOSIREUBEN, OKEYO DRMWAIALFAYO. "Okeyo, A.M. and R.O. Mosi (1999). Performance of Dutch Friesian Cows under semi-arid conditions in Kenya: Reproductive performance and productive life.". In: Bull. Anim. Hlth. Prod. Afri. 47:87-95. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1999. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Okeyo, A.M., Ahuya, C.O. and Wanyoike, M.M. 1999. Carcass Tissue distribution and Characteristics of Small East African and Galla goats, and their F1 crosses to Toggenburg and Anglo-Nubian.". In: Indian Journal of Animal Sciences 71(9): 868-871. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1999. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
1998
OKEYO DRMWAIALFAYO. "Okeyo A. M. and C.O. Ahuya. 1998. Factors affecting milk butterfat content of two indigenous Kenyan goat breeds.". In: Bulletin of Animal Health and Production in Africa. 46:171-174. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1998. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Okeyo A. M., Mosi, R.O and L.K.I. Langat. 1998. Effects of parity and previousparity status on reproductive performance of Kenya Kenya Boran cows.". In: Tropical Agriculture Trinidad. 75: No. 3: 384-389. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1998. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Okeyo, A. M. 1998. Dairy Goat Inspection and Judging:.". In: A guide to practitioners. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1998. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
1997
1996
Okeyo. AM;, Mosi; Ahuya, C.O.; Okomo MA, Okomo MA. "Characterization of the Zebu cattle of Kenya. Physical and morphological characteristics.".; 1996.
Indetie D;, Ouda J;, Irungu R;, Mwai O. "Factors Influencing Pre-weaning Performance In Beef Cattle.".; 1996.
Okeyo AM;, Ruvuma F;, Cartwright TC;, Gichora S. "Productivity parameter estimates of Galla and East African goats at Ol Magogo."; 1996.
Osolo NK;, Kinuthia JN;, Gachuiri CK;, Okeyo AM;, Wanyoike MM;, Okomo M. "Species abundance, food preference and nutritive value of goat diets in the semi-arid lands of east-central Kenya."; 1996. Abstract

The key forage species and nutrient composition of forage species preferred by free- ranging East African goats in rangelands of eastern-central Kenya were determined. One hundred and five forage species were identified including 30 tree, 29 shrub, 20 grass and

OKEYO DRMWAIALFAYO. "Githigia, S.M., Okomo, M.A. Inyangala, B.A., Munyua, S.J., Okeyo, M. and Otieno, R. 1996. Prevalence and infection levels of helminths in goats at Machanga field station over a period of one year.". In: Bulletin of Animal Health and Production in Africa. 44: 111-113. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1996. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Indetie, D. Ouda.J, Irungu, R and Mwai O. 1996. Factors influencing pre-weaning performance in beef cattle.". In: 4th Annual KARI Scientific Conference, 14th-16th Oct. 1996 KARI Headquarters, Nairobi. Kenya. pp.740-754. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1996. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Mosi, R.O, Okeyo, A.M., Ahuya, C.O. and Okomo, M.A. l996. Herds structure and uses the Small East Africa Zebu cattle in the Lake Victoria basin and Coastal Lowlands of Kenya.". In: 4th Annual KARI Scientific Conference, 14th-16th Oct. 1996 KARI Headquarters, Nairobi. Kenya, pp.270-279. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1996. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Okeyo A.M., B.A.O. Inyangala, S.M. Githigia, S.J.M. Munyua, C.K. Gachuiri, M.M.Wanyoike and M.A. Okomo l996. Genetic studies of Galla and East African goats and their correlated growth and reproductive performance under different nutritional levels and Ha.". In: 4th Biennial Conference of the East African Small Ruminant Research Network. 9th-l3th Dec. l996. ILRI - Addis. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1996. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Okeyo A.M., R.O. Mosi, C.O. Ahuya and M.A. Okomo. l996. Characterization of the Zebu cattle of Kenya. Physical and morphological characteristics.". In: 4th Annual KARI Scientific Conference, 14th-16th Oct. 1996 KARI Headquarters, Nairobi. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1996. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
1995
Githigia SM;, Okomo MA;, Inyangala, B.O.; Okeyo M;, Wanyoike MM;, Munyua SJM;, Thamsborg SM;, Kyvsgaard. NC. "Economically Important Diseases Of Goats In A Semi Arid Area Of Kenya.(poster Presentation).".; 1995.
Githigia SM;, Okomo MA;, Inyangala BO;, Okeyo M;, Wanyoike MM;, Munyua ST;, Thamsborg SM;, Kyvsgaard NC. "Economically impotent diseases of goats in a semi-arid area of Kenya.".; 1995.
Githigia SM;, Okomo MA;, Inyangala BO;, Okeyo M;, Wanyoike MM;, Munyua SJM;, Thamsborg SM;, Kyvsgaard. NC. "Prevalence Of Parasitic Diseases Of Goats In Embu District- Kenya.".; 1995.
OKEYO DRMWAIALFAYO. "Githigia, S. M., M. A. Okomo, B.O. Inyangala, M. Okeyo, M. M. Wanyoike, S.J.M. Munyua, S.M. Thamsborg and N.C. Kyvsgaard. 1995. Economically Important Diseases of Goats in a Semi arid area of Kenya.(Poster presentation).". In: 8th International Conference of Institutions of Tropical Veterinary Medicine, Berlin Germany 25-17th september. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1995. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Githigia, S. M., M. A. Okomo, B.O. Inyangala, M. Okeyo, M. M. Wanyoike, S.J.M. Munyua, S.M. Thamsborg and N.C. Kyvsgaard. 1995. Prevalence of parasitic diseases of goats in Embu District- Kenya.". In: 17th Symposium of the Scandinavian Society for Paristology, Finland 15-17th June, 1995. (Bulletin of the Scandinavian society for parasitology). Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1995. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
1994
Okeyo AM;, Inyangala BOA;, Githigia SM;, Maingi NE;, Githigia SM;, Munyua SJM;, Wanyoike MM;, Gachuiri C. "Genetic Studies Of Galla And Small East African Goats And Their Correlated Growth A."; 1994.
OKEYO DRMWAIALFAYO. "Okeyo, A.M., B.A.O. Inyangala, S.M. Githigia, S.J.M. Munyua, M.M. Wanyoike and M.A. Okomo. 1994. Reproductive Performance and Level of Gastro-intestinal parasite infestation in goats on-farm and on-station at Machanga, Embu, Kenya l994.". In: 3rd Biennial Conference on this African Small Ruminant Network, 5th-9th UICC, Kampala,. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1994. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
1993
Mwai OA. "Community breeding of livestock pays off in Ethiopia."; 1993. Abstract

On 15 and 16 November 2011, the International Livestock Research Institute (ILRI), the Ethiopian Institute of Agricultural Research (EIAR) and the Swedish University of Agricultural Sciences (SLU) held a workshop on Sharing Research Results on Trypanotolerance in Indigenous Cattle Breeds and Experiences of Community Based Breed Improvement of Indigenous Sheep in Ethiopia. Here Okeyo Mwai from ILRI explains the importance of community breeding programs.

Mukhebi AW;, Carles AB;, Okeyo AM;, Shavulimo RS. "Experiences and lessons of the small ruminant collaborative research support in Kenya."; 1993.
OKEYO DRMWAIALFAYO. "Okeyo, A.M. and A.B. Carles. l993. Animal Fibre Industry in Kenya: Past Present and Future Prospects with Special Reference to Wool.". In: Annual Symposium of Animal Production Society of Kenya, l7th-l8th Nov. l993. Embu, Kenya. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1993. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
1992
OKEYO DRMWAIALFAYO. "Ruvuna, F., J.F. Taylor, M. Okeyo, M. Wanyoike and C. Ahuya. 1992. Effects of breed and castration on slaughter weight and carcass composition of goats.". In: Small Ruminant Research. 7: 175-183. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1992. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
1991
Okeyo, AM; Mwandutto BAJ; MRO; TJF; ACO, Mwandutto BAJ;, Mosi RO;, Taylor JF;, Ahuya CO. "Some factors influencing age at eruption of permanent incissor pairs in goats."; 1991.
1989
OKEYO DRMWAIALFAYO. "Okeyo A. M. and Mosi, R.O . 1989. Factors affecting 305-day and annual milk yield of Dutch-Friesian cows under at Naivasha, Kenya. In.". In: Eastern and Southern African Conf. of Animal Prod. Societies, at Miekles Hotel, Harare Zimbabwe, 8-12th Aug. 1989. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1989. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
1988
OKEYO DRMWAIALFAYO. "Ruvuna, F., Cartwright, T.C., Blackburn, H., Okeyo, M. and Chema, S., 1988. Gestation length, birth weight and growth rates of purebred indigenous goats and their crosses in Kenya.". In: journal of Agricultural Science. 111(2):363-368. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1988. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
OKEYO DRMWAIALFAYO. "Ruvuna, F., Cartwright, T.C., Blackburn, H., Okeyo, M. and Chema, S., 1988. Lactation performance of goats and growth rates of kid under different milking and rearing methods in Kenya.". In: Animal Production. 46:237-242. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1988. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
1987
Ahuya CO;, Cartwright TC;, Ruvuna F;, Okeyo AM. "Additive and heterotic effects from crossbreeding goats in Kenya."; 1987.
1986
Okeyo AM, Ruvuma F, Cartwright TC, Maleche JN. "Use of teething technique to estimate age in goats.". 1986.
OKEYO DRMWAIALFAYO. "L.C. Iniguez, G.E. Bradford and Okeyo A. Mwai. 1986. Lambing Date and Lambing Production of Spring-mated Rambouillet, Dorset and Finn sheep Ewes and their F1 Crosses. .". In: Journal of Animal Science. 63: 715-728. Rao, W. O., Ogonji, J. A.. and Aywa, S.; 1986. Abstract
PIP: This research report studies several biochemical and histochemical aspects of cervical carcinoma and explores their use in follow-up of patients undergoing radiotherapy. Material came from 19 patients with invasive cervical carcinoma admitted to Kenyatta National Hospital. A control group consisted of 20 women matched for age who attended clinics at the hospital but were not suffering from any malignant disease; control tissue for histological examination was obtained from 3 women who had undergone hysterectomy for uterine fibroids. Biochemical assays for alkaline and acid phosphatases in patients with cervical carcinoma show an increase in alkaline phosphatase in carcinomatous tissue (35.7 umoles/hr/mg) as opposed to normal tissue (7.2). Acid phosphatase values were only moderately raised. Assays of the same enzymes in blood showed a less marked difference between patients and controls (ranges of 7.5-20.8 and 3-14, respectively). When examined histochemically, increased alkaline phosphatase activity was observed in connective tissue, epithelium of the glands and blood capillaries of tumor tissue. 1 section containing normal tissue bordering carcinomatous tissue demonstrated normal alkaline phosphatase activity in the normal tissue and increased activity in the tumor tissue. In summary, there is increased enzyme activity around the tumor areas, but values for serum levels show an overlap of normal and abnormal cases and are therefore not predictive. Results demonstrate a clear difference in activities of these enzymes in carcinomatous tissue and normal tissue, which may be of value in follow-up care.
1985

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