Describes the main ecological zones of Africa and mentions the importance of cattle in each zone, the production systems involved and the general types of cattle that can be maintained. Determines the value of previous breed productivity research in assessing current decision making.
Trail, J.C.M.
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Gregory, K.E.
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[Animal breeding in sub-Saharan Africa: Toward an integrated program for improving productivity]
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Animal breeding in sub-Saharan Africa: Toward an integrated program for improving productivity
Report of a study on the economics of trypanotolerant livestock production with station cattle and village cattle and sheep. Presents data on overall cattle & sheep production parameteres, economic parameters including veterinary services, veterinary treatments, fodder, mineral blocks, night krau...
Morkramer, G.
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Defly, A.
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D'Ieteren, G.D.M.
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Grundler, G.
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Itty, P.
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Leak, S.G.A.
,
Maehl, J.H.H.
,
Mawuena, K.
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Nagda, S.M.
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Rarieya, J.M.
,
Thorpe, W.R.
,
Trail, J.C.M.
,
[Economic aspects of recently introduced trypanotolerant livestock production under trypanosomiasis risk in southern Togo]
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Economic aspects of recently introduced trypanotolerant livestock production under trypanosomiasis risk in southern Togo
Describes the background to the problem of trypanosomiasis in Africa, identifying Bos taurus & Bos indicus types of trypanotolerant breeds & discussing the importance of their use in the exploitation of tsetse-infested areas of Africa. Examines the establishment of a network of trypanotolerant li...
Trail, J.C.M.
,
Murray, M.
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Wissocq, Y.J.
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[The Trypanotolerant Livestock Network in West and Central Africa]
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The Trypanotolerant Livestock Network in West and Central Africa
Describes a dynamic & stochastic simulation model, specifying its driving variables & validating it for production conditions in a study area in Botswana. Compares the simulated performance of Tswana & Simmental x Tswana cattle, analysing economic trade-offs between milk & meat production under v...
Konandreas, P.A.
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Anderson, F.M.
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Trail, J.C.M.
,
[Economic trade-offs between milk and meat production under various supplementation levels in Botswana]
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Economic trade-offs between milk and meat production under various supplementation levels in Botswana
Reports results of a study on the relationships between tsetse challenge and trypanosome prevalence in trypanotolerant and susceptible breeds of cattle. Presents data on tsetse challenge and trypanosome prevalence in N'Dama and Zebu cattle in Zaire, Gabon, Ethiopia and Cote d'Ivoire.
Leak, S.G.A.
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Colardelle, C.
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Coulibaly, L.
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Dumont, P.
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Feron, A.
,
Hecker, P.
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D'Ieteren, G.D.M.
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Jeannin, P.
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Minengu, M.
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Minja, S.
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Mulatu, W.
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Nankodaba, G.
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Ordner, G.
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Rowlands, G.J.
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Sauveroche, B.
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Tikubet, G.
,
Trail, J.C.M.
,
[Relationships between tsetse challenge and trypanosome prevalence in trypanotolerant and susceptible cattle]
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Relationships between tsetse challenge and trypanosome prevalence in trypanotolerant and susceptible cattle
Evaluates the effects of trypanosome infection and other factors on parturition interval (1984-1986) at Network sites of Avetonou, Boundiali & Mushie. Presents data on litter size, lambing interval and calving interval.
Thorpe, W.R.
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Coulibaly, L.
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Defly, A.
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D'Ieteren, G.D.M.
,
Feron, A.
,
Grundler, G.
,
Hecker, P.
,
Itty, P.
,
Maehl, J.H.H.
,
Mawuena, K.
,
Morkramer, G.
,
Mulungo, M.
,
Nagda, S.M.
,
Paling, R.W.
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Pelo, M.
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Rarieya, J.M.
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Schuetterle, A.
,
Trail, J.C.M.
,
[Factors influencing reproductive performance in a range of network situations]
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Factors influencing reproductive performance in a range of network situations
Considerable progress has been made in defining and measuring criteria of trypanotolerance since the late 1970's, when ILCA, FAO and UNEP worked with researchers in 18 West and Central African countries to show clear relationship between level of trypanosomiasis risk and animal performance. Durin...
Trail, J.C.M.
,
D'Ieteren, G.D.M.
,
[Phenotypic and genetic parameter estimates of factors related to the performance of trypanotolerant livestock]
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Phenotypic and genetic parameter estimates of factors related to the performance of trypanotolerant livestock
This paper reviews studies on the relationships between trypanotolerance and performance of cattle, and the genetics of trypanotolerance traits. Results of these studies are used to discuss the practical possibilities of increasing trypanotolerance through selection.
Presents results of experiments to determine phenotypic & genotypic relationships of the abilities to control parasitaemia, resist anaemia or develop an immune response with animal performance in terms of daily weight gain, maintenance of packed cell volume levels and disease prevalence in trypan...
Trail, J.C.M.
,
Feron, A.
,
Pelo, M.
,
Colardelle, C.
,
Ordner, G.
,
D'Ieteren, G.D.M.
,
Durkin, J.W.
,
Maehl, H.M.
,
Thorpe, W.R.
,
[Selection in trypanotolerant cattle breeds in Africa]
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Selection in trypanotolerant cattle breeds in Africa