Mbae, C. K., Githigia, S. M., Njoroge, E. M., Magambo, J. K., Otieno, R. O (2004). The prevalence of gastrointestinal nematodes in small ruminants in semi-arid Turkana District of Kenya.

Citation:
M DRNJOROGEERNEST. "Mbae, C. K., Githigia, S. M., Njoroge, E. M., Magambo, J. K., Otieno, R. O (2004). The prevalence of gastrointestinal nematodes in small ruminants in semi-arid Turkana District of Kenya.". In: Bulletin of Animal Health and Production in Africa, 2004 (Vol. 52) (No. 2) 85-90. African Wildlife Foundation. Nairobi; 2004.

Abstract:

A study was undertaken in the semiarid northern Turkana district of Kenya to estimate the prevalence of gastrointestinal nematodes in small ruminants. The study involved 1106 sheep and goats of various ages. The study was conducted between January and August 2001 and covered both the dry and wet seasons. All the animals were shedding nematode eggs throughout the study period. Faecal shedding was higher in young animals compared to adults and the infection was heavier in sheep. The faecal egg counts were significantly higher during the wet season for both sheep and goats. Haemonchus contortus was the main nematode encountered in coprocultures (goats 73%, sheep 62.8%) and postmortem total worm counts. Other nematodes encountered included Trichostrongylus axei, Trichostrongylus colubriformis, Bunostomum trigonocephalum, Oesophagostomum columbianum and Trichuris ovis. This is the first report of B. trigonocephalum in small ruminants in the semiarid areas of Kenya. In conclusion, gastrointestinal helminths may be a potential constraint to the health and production of small ruminants in the Turkana district. H. contortus is the main nematode species affecting the small ruminants in this area.

Notes:

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