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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.Nagda, S.M.Rodríguez Zas, S.L.Southey, B.R.Audho, James O.Aduda, Eric O.Thorpe, W.R.[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]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

Reports the results of an 18-month study on the prevalence, species and intensity of trypanosome parasitaemias in East African Zebu cattle managed in ten village herds in four areas around Ghibe, S.W. Ethiopia. Gives an estimation of tsetse related density and trypanosome infection rates in tsets...


Mulatu, W.D'Ieteren, G.D.M.Duffera, W.Girma, T.Itty, P.Leak, S.G.A.Maehl, J.H.H.Nagda, S.M.Paling, R.W.Rarieya, J.M.Thorpe, W.R.Trail, J.C.M.[Health and performance of zebu cattle exposed to trypanosomiasis risk in S.W. Ethiopia]Health and performance of zebu cattle exposed to trypanosomiasis risk in S.W. Ethiopia

Bovine trypanosomiasis is prevalent in southwest Ethiopia infested with tsetse flies. Since 1986, East African Zebu cattle raised under trypanosomiasis risk in the Ghibe Valley of southwest Ethiopia have been studied to investigate the effects of trypanosmiasis on health and productivity. Approxi...


Rowlands, G.J.D'Ieteren, G.D.M.Authié, E.Leak, S.G.A.Mulatu, W.Nagda, S.M.[Variations in susceptibility to the effects of trypanosmiasis in East African Zebu cattle]Variations in susceptibility to the effects of trypanosmiasis in East African Zebu cattle

Evaluates teh criteria for trypanotolerance including three related characterstics, v.z. the ability to control parasitaemia, the ability to control anaemia, and the ability to develop an effective immune response.


Trail, J.C.M.Colardelle, C.D'Ieteren, G.D.M.Dumont, P.Itty, P.Jeannin, P.Maehl, J.H.H.Nagda, S.M.Ordner, G.Paling, R.W.Rarieya, J.M.Thorpe, W.R.Yangari, G.[Evaluation of criteria of trypanotolerance]Evaluation of criteria of trypanotolerance

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, KarenMugambi, J.M.M.Nagda, S.M.Sonstegard, T.S.Tassell, C.P. vanBaker, R.L.Gibson, John P.[Quantitative trait loci for resistance to Haemonchus contortus artificial challenge in Red Maasai and Dorper sheep of East Africa]Quantitative trait loci for resistance to Haemonchus contortus artificial challenge in Red Maasai and Dorper sheep of East Africa
Itty, P.Chema, S.D'Ieteren, G.D.M.Durkin, J.W.Leak, S.G.A.Maehl, J.H.H.Maloo, S.H.Mukendi, F.Nagda, S.M.Rarieya, J.M.Thorpe, W.R.Trail, J.C.M.[Economic aspects of cattle production and of chemoprophylaxis for control of trypanosomiasis in village East African Zebu Cattle in Kenya]Economic aspects of cattle production and of chemoprophylaxis for control of trypanosomiasis in village East African Zebu Cattle in Kenya

Discusses the genetic aspects of criteria of trypanotolerance including parasitaemia, anaemia control and immune response. Includes data on heritability estimates for daily liveweight change, for PCV under low & high trypanosome prevalence, and for number of treatments required in four periods af...


Trail, J.C.M.D'Ieteren, G.D.M.Feron, A.Itty, P.Kakiese, O.Maehl, J.H.H.Mulungo, M.Nagda, S.M.Paling, R.W.Pelo, M.Rarieya, J.M.Thorpe, W.R.[Genetic aspects of criteria of trypanotolerance]Genetic aspects of criteria of trypanotolerance

A deltamethrin `pour-on' insecticide was applied monthly to over 2000 cattle exposed to a high challenge of drug-resistant trypanosomes and high tsetse re-invasion pressure in the Ghibe valley, south-west Ethiopia. Blood samples were taken monthly from an average of 760 cattle for determination o...


Rowlands, G.J.Leak, S.G.A.Mulatu, W.Nagda, S.M.Wilson, A.D'Ieteren, G.D.M.[Use of deltamethrin 'pour on' insecticide for the control of cattle trypanosomiasis in the prescence of high tsetse invasion]Use of deltamethrin 'pour on' insecticide for the control of cattle trypanosomiasis in the prescence of high tsetse invasion
D'Ieteren, G.D.M.Awuome, K.Bokovi, K.Chema, S.Colardelle, C.Coulibaly, L.Defly, A.Feron, A.Grundler, G.Handlos, MichaelHecker, P.Itty, P.Kakiese, O.Leak, S.G.A.Maehl, J.H.H.Maloo, S.H.Mawuena, K.Minengu, M.Morkramer, G.Mukendi, F.Mulatu, W.Mulungo, M.Nagda, S.M.Nankodaba, G.Ngamuna, S.Ordner, G.Paling, R.W.Rarieya, J.M.Trail, J.C.M.Yangari, G.Schuetterle, A.Sheria, M.Thorpe, W.R.Tikubet, G.[Trypanosome infections and other factors influencing PCV in livestock]Trypanosome infections and other factors influencing PCV in livestock

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