Genetic resistance to artificially acquired gastrointestinal parasites was studied in 49 Horro and 103 Menz breeds of Ethiopia. The experimental design involved 2 breeds, 2 infection treatments (Infected vs Non infected) and 3 dietary protein treatments using 152 lambs assigned to the 12 treatmen...
The paper reviews the limited data available on both between-and within-breed genetic variation for resistance to helminthiasis in cattle, sheep and goats in the tropics. Topics covered include criteria of resistance, resilience or tolerance, parasite species and mode of infection, parameters to ...
Baker, R.L.
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[Genetic resistance against helminth infections in cattle, sheep and goats in the tropics]
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Genetic resistance against helminth infections in cattle, sheep and goats in the tropics
Research in Kenya has confirmed that Red Maasai sheep are more resistant to gastrointestinal parasites than Dorper sheep and has shown that Small East African goats are more resistant than Galla goats. There is no difference in resistance between the Menz and Horro sheep breeds in Ethiopia. Herit...
Baker, R.L.
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Rege, J.E.O.
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Tembely, S.
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Mukasa-Mugerwa, E.
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Anindo, D.O.
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Mwamachi, D.M.
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Thorpe, W.R.
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Lahlou-Kassi, A.
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[Genetic resistance to gastrointestinal nematode parasites in some indigenous breeds of sheep and goats in East Africa]
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Genetic resistance to gastrointestinal nematode parasites in some indigenous breeds of sheep and goats in East Africa
Rege, J.E.O.
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Baker, R.L.
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Hanotte, Olivier H.
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[Improving our understanding and utilisation of indigenous livestock breeds of developing countries: Key research challenges]
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Improving our understanding and utilisation of indigenous livestock breeds of developing countries: Key research challenges
Baker, R.L.
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[Genetic resistance to endoparasites in sheep and goats: A review of genetic resistance to gastrointestinal nematode parasites in sheep and goats in the tropics and evidence for resistance in some sheep and goat breeds in sub-humid coastal Kenya]
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Genetic resistance to endoparasites in sheep and goats: A review of genetic resistance to gastrointestinal nematode parasites in sheep and goats in the tropics and evidence for resistance in some sheep and goat breeds in sub-humid coastal Kenya
Data collected on 3256 lambs born to Horro and Menz breed ewes single-sire mated to 71 rams at the International Livestock research Institute (ILRI) Debre Berhan station between September 1992 and June 1996 were analysed for rates of survival and growth from birth to weaning. A significantly lowe...
Mukasa-Mugerwa, E.
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Lahlou-Kassi, A.
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Anindo, D.O.
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Rege, J.E.O.
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Tembely, S.
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Tibbo, Markos
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Baker, R.L.
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[Between and within breed variation in lamb survival and the risk factors associated with major causes of mortality in indigenous Horro and menz sheep in Ethiopia]
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Between and within breed variation in lamb survival and the risk factors associated with major causes of mortality in indigenous Horro and menz sheep in Ethiopia
Resistance and resilience to naturally acquired gastro-intestinal (GI) nematode parasite infections (predominantly Haemonchus contortus) were studied in 1785 lambs born over six lambings (1991 to 1996) consisting of 212 Red Maasai, 311 Dorper and 1262 crossbred (Red Maasai-Dorper) lambs in the su...
Baker, R.L.
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Nagda, S.M.
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Rodríguez Zas, S.L.
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Southey, B.R.
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Audho, James O.
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Aduda, Eric O.
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Thorpe, W.R.
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[Resistance and resilience to gastro-intestinal nematode parasites and relationships with productivity of Red Maasai, Dorper and Red Maasai X Dorper crossbred lambs in the sub-humid tropics]
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Resistance and resilience to gastro-intestinal nematode parasites and relationships with productivity of Red Maasai, Dorper and Red Maasai X Dorper crossbred lambs in the sub-humid tropics
The Menz and Horro highland sheep breeds are being evaluated at the ILCA Debre Birhan research station in Ethiopia for between-and within-breed genetic variation for resistance to internal parasites. The experimental design involve mating, for each breed, 150 ewes with 10 rams to lamb at the begi...
Rege, J.E.O.
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Tembely, S.
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Mukasa, E.
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Sovani, S.
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Anindo, D.O.
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Lahlou-Kassi, A.
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Baker, R.L.
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[Preliminary evidence for genetic resistance to endoparasites in Menz and Horro lambs in the highlands of Ethiopia]
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Preliminary evidence for genetic resistance to endoparasites in Menz and Horro lambs in the highlands of Ethiopia
Sub-Saharan Africa is rich in animal biodiversity. Over 95 percent of the continent's domestic ruminants are indigenous. In Africa, indigenous livestock breeds support the majority of smallholder rural farmers for whom these genetic resources are important for improved nutrition, income and as in...
A genome-wide scan was performed to detect quantitative trait loci (QTL) for resistance to the gastrointestinal nematode Haemonchus contortus in a double backcross population of Red Maasai and Dorper sheep. The mapping population comprised six sire families, with 1026 lambs in total. The lambs we...
Marshall, Karen
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Mugambi, J.M.M.
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Nagda, S.M.
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Sonstegard, T.S.
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Tassell, C.P. van
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Baker, R.L.
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Gibson, John P.
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[Quantitative trait loci for resistance to Haemonchus contortus artificial challenge in Red Maasai and Dorper sheep of East Africa]
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Quantitative trait loci for resistance to Haemonchus contortus artificial challenge in Red Maasai and Dorper sheep of East Africa