Publications

Found 80 results

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2015
F.Kibegwa M, Githui KE, Junga JO, Badamana MS, Nyamu MN. "Mitochondrial DNA variation of indigenous goats in Narok and Isiolo counties of Kenya." Journal of Animal Breeding and Genetics. 2015:1-10.
2014
S.S.Lekerpes, J.O.Junga, M.S.Badamana, D.I.Rubenstein. "Genetic polymorphism of beta-lactoglobulin in Kenyan Small East African goat breed using PCR-RFLP and sequencing." Scientific Journal of Animal Science. 2014:233-239.
2010
Mwanyumba PM, Wahome RG, Mwang’mbe A, Lenihan E, Badamana MS. "An anaylsis of factors affecting smallholder mixed farming activities, performance and interactions in Wundanyi location, Taita District, Kenya." Livestock Research for Rural Development. 2010;22.
Mwanyumba PM, Wahome RG, Mwang’mbe A, Lenihan E, Badamana MS. "A dynamic study of smallholders mixed farms in Wundanyi location, Taita District, Kenya: Activities, performance and interactions." Livestock Research for Rural Development. 2010;23.
Mwanyumba PM, Mwang’mbe A, Lenihan E, Badamana MS, Wahome RG, Wakhungu JW. "Participatory anaylsis of the farming system and resources in Wundanyi location, Taita District, Kenya: A Livestock perspective." Livestock Research for Rural Development. 2010;22.
2009
O OL, W KL, W MR, S BB. "Diet composition and nutritional contribution of food scavenged by indigenous chickens in Western Kenya." Livestock Research for Rural Development. 2009;21.
Njubi DM, Wakhungu J, Badamana MS. "Mating decision support system using computer neural network model in Kenyan Holstein-Friesian dairy cattle.". 2009. Abstract

Knowledge discovery in databases (KDD) should provide not only accurate predictions but also comprehensible rules. In this paper, we demonstrate that the machine learning approach of rule extraction from a computer trained neural network system can successfully be applied to milk production analyses in dairy cattle. Such extracted knowledge should be useful in interpretation and understanding how the neural network (NN) model makes its decision. Data consisting of 6095 lactation records made by cows from 76 officially milk recorded Holstein Friesian herds in the period 1988-2005 were used to extract rules using neural network. Two different methods of attribute categorization; auto-class and the domain expert were used. For automated knowledge acquisition, rule induction used Weka software while SAS was used in domain expert. The neural nets were first trained to identify outputs for different inputs. The trained networks were then used for rule extraction. The study showed that the decision trees generated from the trained network had higher accuracy than decision trees created directly from the data. The study also indicated a need for a process to determine important inputs before using a neural net and showed that reduced input sets may produce more accurate neural nets and more compact decision trees. The “black-box” nature of neural networks was explained by extracting rules with both the domain expert and autoclass for both the continuous and the discrete valued inputs with rule sets performing better on the ‘low’ and ‘high’ levels. It follows from these analyses that performance at the two extremes was more important than average performance. It implied that the end user was particularly concerned with identifying mating with good potential and avoid mating with poor potential animals. The decision tree showed that when the herd performance was low then the foremost limiting factor was the dam performance whereas for medium and high herd performance sire level performance was the limiting factor. Through sensitivity analysis the most important and sensible factors with respect to productivity were sire breeding value and herd performance. It was, therefore, concluded that neural network rule extraction and decision tables were powerful management tools that allow the building of advanced and user-friendly decision-support systems for mating strategy designs and their evaluation.

Njubi DM, Wakhungu J, Badamana MS. "Milk yield prediction in Kenyan Holstein- Friesian cattle using computer neural networks system.". 2009. Abstract

An essential aspect of understanding any natural system is the ability to acquire knowledge through experience and to adapt to new situations. This study, investigates the use of back-propagation Artificial Neural Networks (ANN) (an artificial intelligence technique) approach to model and predict the performance of daughter first lactation milk yield in recorded dairy cattle herds in Kenya. Such prediction is a prerequisite to selection which ultimately leads to optimal breeding strategies and increased annual genetic progress. Data consisting of 6095 lactation records made by the Kenyan Holstein-Friesian cows from 76 officially milk recorded herds of 445 sires, 1956 dams and 2267 daughters and collected over the period 1988 -2005 were used to predict the first lactation performance of the female offspring based on recorded genetic traits of their parents using computer Neural Networks (NN). Weka and MATLAB softwares were used for NN analyses while SAS (2003) and Derivative free Restricted maximum likelihood (DFREML) (Meyer 1989) computer packages were used for statistical analyses. Different ANN were modeled and the best performing number of hidden layers and neurons and training algorithms retained. The performance of the ANN model in simulating daughter performance was compared with the industry default technique linear regression (LR) model. The best NN model had one hidden layer with 8 hidden nodes and tangent sigmoid transfer function for hidden layer. The correlation coefficients between the observed and the estimated daughter milk yield for the two estimation methods was generally high (>0.80). Including sire information resulted to more accurate predictions by a neural network as shown by reduced root mean square error. Generally more accurate prediction was obtained by a neural network approach than by linear regression. This suggests a non-linear relationship exists among the feature variables in the data and that these are learned by the hidden layer of the NN. Thus, prediction tests show that the ANN models used in this study

Okitoi LO, Kabuage LW, Muinga RW, Badamana MS. "The potential of morning and afternoon supplementation of scavenging chickens on diets with varying energy and protein levels.". 2009. Abstract

The effects of supplementing different diets with varying levels of energy and protein either in the morning or afternoon were assessed. 384 scavenging indigenous chickens aged 14 weeks were allocated to four treatment diets: 1: Positive control (commercial diet); 2: High energy (3062 kcal/kg DM), high protein (224 g/kg DM) (HEHP); 3: Low energy (2378 kcal/kg DM), high protein (218 g/kgDM) (LEHP); 4: Low energy, Low protein (LELP). The supplements were offered in the morning and afternoon. Results showed that both pre-lay scavenging pullets and adult hens that received supplemental diets with high protein levels (HEHP and LEHP) both in the morning and afternoon ate more supplemental feed during the afternoon hours. Supplemental energy intake by scavenging pullets was higher in the morning than in afternoon while the reverse was true for adult scavenging hens. The mean supplemental crude protein intake was higher for both pullets and hens in the afternoon. Scavenging indigenous pullets consumed 11.7% more supplemental crude protein in the afternoon while hens consumed 12.4% more supplemental crude protein in the afternoon. Supplemental lysine, tryptophan and methionine + cystine intakes were higher for scavenging pullets in the afternoon and the same case for adult scavenging hens in the morning and afternoon. Egg production and weights were higher for hens supplemented with HEHP and LEHP compared to those receiving commercial diet (CD), and those supplemented with LELP diets both in the morning and afternoon. Feed cost was higher in pre-lay pullets supplemented with commercial diets (same levels of energy and protein in morning and afternoon) than with HEHP and LEHP diets mainly due to the higher price of commercial feed compared to that of ingredients found locally. The study suggests that offering a supplement of commercial diet (same level of energy and protein) for growing scavenging pullets followed by a high energy and high protein supplement during the laying period may increase feed intake, nutrient intake, egg production and egg weights

2008
Okitoi LO,.Kabuage LW, Muinga RW, Mukisira EA, M.S B. "Nutrition and feeding strategies for indigenous chickens in extensive management systems: a review." E. Afr. Agric. For J.. 2008;74(2):59-69.
2006
Wakhungu JW, Badamana MS, Olukoye GA. "Productivity of Indigenous and Exotic Cattle on Kenya Ranches.". 2006. Abstract

A comparison of productivity and adaptability of indigenous (Boran and Small East African Zebu) and the exotic (Sahiwal and Ayrshire) cattle on Kenyan ranches located in semi-arid areas of the Rift Valley Provinces was done. Data sets of the cattle breeds over the 1979-1993 period on Deloraine, Elkarama, Ilkerin, National Sahiwal Stud (NSS) and Oljorai were analyzed by the least squares fixed effects model procedures. The least squares means of productivity component traits of each breed were imputed in PRY model to derive feed energy efficiency (FEE) index and carry out sensitivity analyses. The respective FEE indices were 137, 106, 100, 86, 82, 79, 78, and 65 aggregate value off take per unit of feed energy requirements for NSS Sahiwal, Deloraine Ayrshire, Deloraine Sahiwal, Elkarama Sahiwal, Ilkerin Sahiwal, Elkarama Boran, Oljorai Boran and Ilkerin small East African Zebu. The sensitivity showed that survival and reproductive (fitness) traits of the indigenous cattle were lower than for exotic cattle indicating better adaptability of indigenous cattle. The sensitivity values of milk yield, mature weight and mature age were at near optimal levels for the ranch environments, except for Deloraine Ayrshire and Elkarama Boran. The results suggest that fitness traits and rate of genetic progress by selection in production traits could be further enhanced by improving environmental management on the ranches. The implications on development strategies of indigenous and exotic cattle are also discussed.

MOHAMED PBADAMANA. "Badamana M.S. & J.W. Wakhungu (2006): Stratified goat production in the Kenyan rangelands of the proceedings of the FVM 5th Biennial Scientific Conference and distribution, 2006.". In: proceedings of the FVM 5th Biennial Scientific Conference and distribution, 2006. Journal of BiochemiPhysics; 2006.
MOHAMED PBADAMANA. "Kilonzo, J.M. and M.S. Badamana (2006). Seasonal diet quality of grant.". In: proceedings of the FVM 5th Biennial Scientific Conference and distribution, 2006. Journal of BiochemiPhysics; 2006.
2005
MOHAMED PBADAMANA. "Badamana M.S., J.W. Wakhungu (2005). The Development of Dairy cattle industry in the medium potential agro-climatic zones of Kenya. The Kenya Veterinarian (Submitted).". In: proceedings of the FVM 5th Biennial Scientific Conference and distribution, 2006. Journal of BiochemiPhysics; 2005.
MOHAMED PBADAMANA. "Badamana, M.S., J.W. Wakhungu (2005). The Development of Dairy Goats in small scale farming areas in Kenya. The Kenya Veterinarian (submitted).". In: proceedings of the FVM 5th Biennial Scientific Conference and distribution, 2006. Journal of BiochemiPhysics; 2005.
MOHAMED PBADAMANA. "Wakhungu J. W. , Olukoye G.A. and M.S. Badamana (2005). Productivity of Indigenous and Exotic cattle on Kenyan ranches. The Kenya Veterinarian (submitted).". In: proceedings of the FVM 5th Biennial Scientific Conference and distribution, 2006. Journal of BiochemiPhysics; 2005.
MOHAMED PBADAMANA. "Wakhungu, J.W. annd M.S. Badamana (2005). Indigenous animals and plants genetic resources for conservation of pastoralists of range management of East Africa. African Journal of Ecology (Submitted).". In: proceedings of the FVM 5th Biennial Scientific Conference and distribution, 2006. Journal of BiochemiPhysics; 2005.
2004
MOHAMED PBADAMANA. "Badamana, M.S., J. W. Wakhungu and R. O. Mosi (2004). Enhanced productivity indexing of goats. Bull Anim. Hlth, Prod. Afr.(2004), 52,31-38.". In: proceedings of the FVM 5th Biennial Scientific Conference and distribution, 2006. Journal of BiochemiPhysics; 2004.
2002
MOHAMED PBADAMANA. "Badamana .M.S, J.W. Wakhungu (2002). The development of dairy cattle industry in the medium potential Agro-climatic zones of Kenya.". In: A paper presented at the faculty of vetrinary medicine. Biannual scientific conference at Kabete, Kenya, 7-9/8/2002. Journal of BiochemiPhysics; 2002.
MOHAMED PBADAMANA. "Badamana .M.S, J.W. Wakhungu (2002). The role of dairy goats in small scale farming areas in Kenya.". In: A paper presented at the faculty of vetrinary medicine. Biannual scientific conference at Kabete, Kenya, 7-9/8/2002. Journal of BiochemiPhysics; 2002.
MOHAMED PBADAMANA. "Badamana M.S and J.W. Wakhungu (2002). The dairy potential in Rangelands of Kenya: (i) Indegenous cattle and sheep.". In: A paper presented at the scientific confrence of Kenya Veterinary Association, held at Kakamega, Kenya 24- 26/4/2002. Journal of BiochemiPhysics; 2002.
MOHAMED PBADAMANA. "Badamana M.S and J.W. Wakhungu (2002). The dairy potential in Rangelands of Kenya: (ii) Indegenous camels and goats.". In: A paper presented at the scientific conference of Kenya Veterinary Association, held at Kakamega, Kenya 24- 26/4/2002. Journal of BiochemiPhysics; 2002.
MOHAMED PBADAMANA. "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. Journal of BiochemiPhysics; 2002.
MOHAMED PBADAMANA. "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. Journal of BiochemiPhysics; 2002.
MOHAMED PBADAMANA. "Wakhungu J.W. M.S. Badamana and R.O. Mosi, (2002). Impact of Genetic Improvement in Dairy Production of the Kenyan Zebu cattle. A paper presented at the scientific conference of Kenya Veterinary Association, held at Kakamega, Kenya 24-26/4/2002.". In: A paper presented at the scientific conference of Kenya Veterinary Association, held at Kakamega, Kenya 24-26/4/2002. Journal of BiochemiPhysics; 2002.
2001
1994
MOHAMED PBADAMANA. "Mburu J. N., J. M. Z. Kamau and M. S. Badamana (1994). Thyroid hormones and metabolic rate during induction of vitamin B12 deficiency in goats. New Zealand Veterinary Journal, (1994), 42, 187 .". In: A paper presented at the Faculty of Veterinary Medicine Bi-annual Scientific conference at Kabete , Kenya, 3-5th Nov 2004. Journal of BiochemiPhysics; 1994.
MOHAMED PBADAMANA. "Mburu, J. N. M. S. Badamana and J. M. Z. Kamau (1994) Faecal and Urinal losses of nitrogen in cobalt deficient small East African goat. Indian Journal of Animal Sciences. 64(11): 1264-1267.". In: A paper presented at the Faculty of Veterinary Medicine Bi-annual Scientific conference at Kabete , Kenya, 3-5th Nov 2004. Journal of BiochemiPhysics; 1994.
MOHAMED PBADAMANA. "Mburu, J. N., J. M. Kamau, M.S. Badamana and P. N. Mburu (1994). Use of serum vitamin B12 in Diagnosis of Cobalt Deficiency in small East African Goats. Bull Anim. Hlth. Prod. Afr. (1994), 42, 141, 146.". In: A paper presented at the Faculty of Veterinary Medicine Bi-annual Scientific conference at Kabete , Kenya, 3-5th Nov 2004. Journal of BiochemiPhysics; 1994.
MOHAMED PBADAMANA. "Wakhungu J.W. Olukoye G.A. and M.S. Badamana (2004). Productivity of indigenous and exotic cattle on Kenyan ranches.". In: A paper presented at the Faculty of Veterinary Medicine Bi-annual Scientific conference at Kabete , Kenya, 3-5th Nov 2004. Journal of BiochemiPhysics; 1994.
1993
MOHAMED PBADAMANA. "Mburu, J. N. J. M. Kamau and M.S. Badamana (1993). Changes in serum levels in vitamins B12, feed intake, live weight and Hematological parameters in Deficient Small East African Goats. Internat. J. Vit. Nutr. Res 63 (1993) : 135 .". In: A paper presented at the Faculty of Veterinary Medicine Bi-annual Scientific conference at Kabete , Kenya, 3-5th Nov 2004. Journal of BiochemiPhysics; 1993.
1992
MOHAMED PBADAMANA. "Badamana M.S. (1992). Some factors affecting diet digestibility in goats, Bulls, Anim. Prod. Afr. (1992), 40,267-274.". In: A paper presented to the All African Conference on Animal Agriculture, Nov. 23 . Journal of BiochemiPhysics; 1992.
MOHAMED PBADAMANA. "Badamana M.S., (1992). Forage utilization by dairy goats. Bull Anim. Prod. Afri. (1992). 40: 259-266.". In: A paper presented to the All African Conference on Animal Agriculture, Nov. 23 . Journal of BiochemiPhysics; 1992.
1991
Badamana MS. "Dairy cattle industry in Kenya.".; 1991.
MOHAMED PBADAMANA. "Badamana M.S. (1991) Dairy cattle industry in Kenya. A paper presented in a seminar on vitamin nutrition in livestock, sponsored by H. Oldman La Roche Limited held on 14th .". In: A paper presented in a seminar on vitamin nutrition in livestock, sponsored by H. Oldman La Roche Limited held on 14th . Journal of BiochemiPhysics; 1991.
MOHAMED PBADAMANA. "Nyakalo, S., M.S. Badamana, M.M. Wanyoike, 1991. Methods of measuring milk yield from Galla goats. In proceedings of the Nineth SR-CRSP scientific workshop held in Nairobi, Kenya. pp. 131-139.". In: In proceedings of the Nineth SR-CRSP scientific workshop held in Nairobi, Kenya. pp. 131-139. Journal of BiochemiPhysics; 1991.
1990
MOHAMED PBADAMANA. "Badamana M. S., J. D. Sutton, J. D. Oldman and A. Mowlem, (1990). The effect of amount of protein in the concentrates on hay intake and rate of passage, diet digestibility and milk production in British Saanen goats. J. Brit. Soc. Anim. Prod. 51: 333-342.". In: Proceedings of the First Biannual Conference of the African Small Ruminant Network, ILRAD, Nairobi, Kenya; 10-14 December 1990. ILCA (International Livestock Centre for Africa), pp. 505-515. Journal of BiochemiPhysics; 1990.
MOHAMED PBADAMANA. "Badamana M.S. (1990). The effect of level of protein in the concentrate on the performance of dairy goats. In: Proceedings of the Eighth SR-CRSP Scientific Workshop, Nairobi, Kenya 7-8/3/90 pp. 232-236.". In: In: Proceedings of the Eighth SR-CRSP Scientific Workshop, Nairobi, Kenya 7-8/3/90 pp. 232-236. Journal of BiochemiPhysics; 1990.
MOHAMED PBADAMANA. "Badamana M.S., A.N. Said, M.M. Wanyoike and A. Abate (1990). Improving Ruminant Livestock Production in Sedentary smallholder farming systems in Kenya. Paper presented to Pan Commonwealth Veterinary Conference Animal Health and Production 2001 Harare, Int.". In: Paper presented to Pan Commonwealth Veterinary Conference Animal Health and Production 2001 Harare, International Conference on Centre 10-14 September 1990. Journal of BiochemiPhysics; 1990.
MOHAMED PBADAMANA. "Baptist, R. and M.S. Badamana (1990). Productivity assessment with many interacting components traits. In: Proceedings of the Eighth SR-CRSP Scientific Workshop, Nairobi Kenya 7-8/3/90 pp. 207-215.". In: In: Proceedings of the Eighth SR-CRSP Scientific Workshop, Nairobi Kenya 7-8/3/90 pp. 207-215. Journal of BiochemiPhysics; 1990.
MOHAMED PBADAMANA. "Inyangala, B.A.O., J.E.O. Rege and S.Itulya. 1990. Growth Traits of the Dorper Sheep. I. Factors influencing Growth Traits. In: Rey B, Lebbie S H B and Reynolds L (eds). 1992. 4 Small Ruminant Research and Development in Africa. Proceedings of the First B.". In: Proceedings of the First Biannual Conference of the African Small Ruminant Network, ILRAD, Nairobi, Kenya; 10-14 December 1990. ILCA (International Livestock Centre for Africa), pp. 505-515. Journal of BiochemiPhysics; 1990.
1989
Badamana. MS;, Wanyoike MM. "The Potential Of Noncommercial Feeds In Dairy Animals.".; 1989.
Abate A;, Wanyoike MM;, Badamana MS;, Abate AN. Towards Improving Animal Production In The Rangelands..; 1989.Website
MOHAMED PBADAMANA. "Abate, A., M.M. Wanyoike, M.S. Badamana and A.N. Abate (1989). Towards improving animal production in the Rangelands. In: proceedings of the 16th Grassland congress, Niece, France. Vol. 2pp. 1613 .". In: In: proceedings of the 16th Grassland congress, Niece, France. Vol. 2pp. 1613 . Journal of BiochemiPhysics; 1989.
MOHAMED PBADAMANA. "Badamana M.S. (1989). Feeding lactating dairy goats. Paper presented to Animal Production Society of Kenya (APSK) symposium held at the Wildlife and Fisheries Training Institute, Naivasha, Nov. 30th to December 1st 1989.". In: Paper presented to Animal Production Society of Kenya (APSK) symposium held at the Wildlife and Fisheries Training Institute, Naivasha, Nov. 30th to December 1st 1989. Journal of BiochemiPhysics; 1989.
MOHAMED PBADAMANA. "Badamana M.S. and K. Kiugu (1989). The problems associated with feeding experimental animals. Paper presented in the First East African Conference on Laboratory Animals held on 7-10th November, Nairobi, Kenya.". In: Paper presented in the First East African Conference on Laboratory Animals held on 7-10th November, Nairobi, Kenya. Journal of BiochemiPhysics; 1989.
MOHAMED PBADAMANA. "Badamana M.S. and M.M. Wanyoike (1989). The potential of noncommercial feeds in dairy animals. Paper presented at Kenya Vet. Association Annual Conference on 19-21/4/1989, at Kenya Trypanosomiasis Research Institute Muguga.". In: Paper presented at Kenya Vet. Association Annual Conference on 19-21/4/1989, at Kenya Trypanosomiasis Research Institute Muguga. Journal of BiochemiPhysics; 1989.
MOHAMED PBADAMANA, OTEMBA MRINYANGALABENSONA. "Inyangala, B.A.O., S. Itulya and J.E.O. Rege. 1989. The Potential of the Dorper in Upgrading Red Maasai Sheep. In: van Klinken, M.K. and ole Seitah, J. (eds), The Future of Maasai Pastoralists in Kajiado District (Kenya). Arid and Semi-Arid Lands (ASAL) D.". In: Proceedings of a conference held in Brackenhurst Baptist International Conference Centre Limuru, Kenya, 28-31 May, 1989. Journal of BiochemiPhysics; 1989.
MOHAMED PBADAMANA. "Nyakalo, S., M.S. Badamana and M.M. Wanyoike, (1989). The effect of inclusion of poultry litter in a supplement on voluntary intake and digestibility in lactating Galla goats. Paper presented to APSK symposium held at the Wildlife and Fisheries training I.". In: Paper presented to APSK symposium held at the Wildlife and Fisheries training Institute, Naivasha Nov. 30th to December 1st 1989. Journal of BiochemiPhysics; 1989.
1988
MOHAMED PBADAMANA. "Badamana, M.S. (1988). The principle and practice of feeding diary cattle during gestation. A paper presented to Kenya Vet. Association, Annual Scientific Conference held on 21-22 April 1988 at ILRAD .". In: A paper presented to Kenya Vet. Association, Annual Scientific Conference held on 21-22 April 1988 at ILRAD . Journal of BiochemiPhysics; 1988.
1987
1986
1985
1984
MOHAMED PBADAMANA. "Badamana, M. S. and J. D. Oldham, (1984). Factors affecting ration digestibility in goats. A paper presented at the FAO seminar on goat feeding and nutrition, Grangenenve, Switzerland. 16 .". In: A paper presented at the FAO seminar on goat feeding and nutrition, Grangenenve, Switzerland. 16 . Journal of BiochemiPhysics; 1984.

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