This paper undertakes an ex ante economic analysis of research on how resistance to trypanosomosis - a dominant livestock disease in Africa - can be maintained and enhanced while retaining and reinforcing characteristics of economic importance to farmers, and on how 'trypanotolerance' can be impa...
Falconi, C.A.
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Omamo, S.W.
,
D'Ieteren, G.D.M.
,
Iraqi, F.A.
,
[An ex ante economic and policy analysis of research on genetic resistance to livestock disease: Trypanosomiasis in Africa]
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An ex ante economic and policy analysis of research on genetic resistance to livestock disease: Trypanosomiasis in Africa
Blood samples were collected from parasitaemic cattle in the Ghibe Valley, Ethiopia, frozen in liquid nitrogen and transported to Nairobi, Kenya. Twelve of the stabilates were inoculated into individual Boran (Bos indicus) calves and characterised for their sensitivity, in turn, to diminazene ace...
Codjia, V.
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Mulatu, W.
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Majiwa, P.A.O.
,
Leak, S.G.A.
,
Rowlands, G.J.
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Authié, E.
,
D'Ieteren, G.D.M.
,
Peregrine, A.S.
,
[Epidemiology of bovine trypanosomiasis in the Ghibe valley, southwest Ethiopia. 3. Occurrence of population of Trypanosoma congolense resistant to diminazene, isometamidium and homidium]
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Epidemiology of bovine trypanosomiasis in the Ghibe valley, southwest Ethiopia. 3. Occurrence of population of Trypanosoma congolense resistant to diminazene, isometamidium and homidium
An average of 840 East African Zebu cattle from nine herds in the Ghibe Valley, southwest Ethiopia were monitored from 1986 to 1990. Each month blood samples were collected from analysis of packed red cell volume and detection of trypanosomes. Animals were found to be parasitaemic and with a PCV ...
Rowlands, G.J.
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Mulatu, W.
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Authie, A.
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D'Ieteren, G.D.M.
,
Leak, S.G.A.
,
Nagda, S.M.
,
Peregrine, A.S.
,
[Epidemiology of bovine trypanosomiasis in the Ghibe Valley, southwest Ethiopia. 2. Factors associated with variations in trypanosome prevalence, incidence of new infections and prevalence of recurrent infections]
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Epidemiology of bovine trypanosomiasis in the Ghibe Valley, southwest Ethiopia. 2. Factors associated with variations in trypanosome prevalence, incidence of new infections and prevalence of recurrent infections
Approximately 320 East African Zebu cows over 36 months of age were monitored monthly from 1986 to 1992 in nine village herds in an area of high trypanosomiasis risk in southwest Ethiopia where there was resistance to all available trypanocidal drugs. Cows were individually treated with diminazen...
Rowlands, G.J.
,
Woudyalew Mulatu
,
Nagda, S.M.
,
D'Ieteren, G.D.M.
,
[Variations in packed red cell volume and trypanosome prevalence and relationships with reproductive traits in East African Zebu cows exposed to drug-resistant trypanosomes]
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Variations in packed red cell volume and trypanosome prevalence and relationships with reproductive traits in East African Zebu cows exposed to drug-resistant trypanosomes
This volume presents major results obtained since the publication of volume 1 and 2 and updates national data on trypanotolerant cattle. The first part analyses populations and their trends between the two surveys and reviews research activities and development activities. It also gives recent in...
Hoste, Christian H.
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Chalon, E.
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D'Ieteren, G.D.M.
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Trail, J.C.M.
,
[Trypanotolerant livestock in West and Central Africa. Volume 3. A decade's results]
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Trypanotolerant livestock in West and Central Africa. Volume 3. A decade's results
Discusses factors influencing liveweight in a range of trypanotolerance network situations. Analyses liveweight traits, viz, dam liveweights at parturition and weaning, dam liveweight change between parturition and weaning, progeny liveweights at birth and weaning and progeny pre-weaning daily gain.
Maehl, J.H.H.
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Coulibaly, L.
,
Defly, A.
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D'Ieteren, G.D.M.
,
Feron, A.
,
Grundler, G.
,
Hecker, P.
,
Itty, P.
,
Mawuena, K.
,
Morkramer, G.
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Mulungo, M.
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Nagda, S.M.
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Paling, R.W.
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Pelo, M.
,
Rarieya, J.M.
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Schuetterle, A.
,
Sheria, M.
,
Thorpe, W.R.
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Trail, J.C.M.
,
[Factors influencing liveweight in a range of network situations]
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Factors influencing liveweight in a range of network situations
Studies the health and performance of two strains trypanotolerant N'Dama cattle, susceptible Nguni cattle and their crosses over a three-year period, 1983-1985, at OGAPROV ranch in Gabon; presents the influences of breed and animal age on the prevolence, species and intensity of trypanosome paras...
Ordner, G.
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Colardelle, C.
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D'Ieteren, G.D.M.
,
Dumont, P.
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Itty, P.
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Jeannin, 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.
,
Yangari, G.
,
[Health and productivity of trypanotolerant and susceptible cattle exposed to trypanosomiasis in Gabon and the impact of strategic chemoprophylaxis]
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Health and productivity of trypanotolerant and susceptible cattle exposed to trypanosomiasis in Gabon and the impact of strategic chemoprophylaxis
Thorpe, W.R.
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D'Ieteren, G.D.M.
,
Feron, A.
,
Mundia, M.
,
Ross, D.
,
Sheria, M.
,
Spooner, R.L.
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Trail, J.C.M.
,
[Practical possibilities of blood grouping for parentage information: A pilot study in Zaire]
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Practical possibilities of blood grouping for parentage information: A pilot study in Zaire
Discusses the productivity of N;Dama cattle at Kolo and Mushie ranches (Zaire). Includes data on productivity under zero (Kolo) and high (Mushie) trypanosomiasis risk (1984-86). Compares the productivity of Boran and N'Dama cattle under ranch management at five sites in Africa.
The prevalence, species and intensity of trypanosome parasitaemia in different livestock species, breeds, age groups and management systems are reported from Togo for trypanosotolerant sheep and goats in the Sokode area. The effects of these trypanosome parasitaemias on health and production trai...
Defly, A.
,
Awuome, K.
,
Bokovi, K.
,
D'Ieteren, G.D.M.
,
Grundler, G.
,
Handlos, Michael
,
Itty, P.
,
Leak, S.G.A.
,
Maehl, J.H.H.
,
Mawuena, K.
,
Morkramer, G.
,
Nagda, S.M.
,
Paling, R.W.
,
Rarieya, J.M.
,
Thorpe, W.R.
,
Trail, J.C.M.
,
[Effect of trypanosome infection on livestock health and production in Togo]
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Effect of trypanosome infection on livestock health and production in Togo