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Report 1983

Autor: Kiwuwa, G.H. Trail, J.C.M. Yousef, M.K. Worku, G. Anderson, F.M. Durkin, J.W.

Presents results of analyses carried out on a range of performance traits and productivity estimates for indigenous Arsi & Zebu cattle and their crosses with Jersey & Friesian, maintained for milk production at Asela station & on smallholder farms in the Arsi region of Ethiopia; includes data on ...

Enlace original: https://cgspace.cgiar.org/handle/10568/4674

Investigación en Agricultura
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Kiwuwa, G.H. ,  Trail, J.C.M. ,  Yousef, M.K. ,  Worku, G. ,  Anderson, F.M. ,  Durkin, J.W. ,  [Crossbred dairy cattle productivity in Arsi region, Ethiopia] ,  Crossbred dairy cattle productivity in Arsi region, Ethiopia
Report 1984

Autor: Trail, J.C.M. Gregory, K.E.

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.

Enlace original: https://cgspace.cgiar.org/handle/10568/50158

Investigación en Agricultura
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Trail, J.C.M. ,  Gregory, K.E. ,  [Animal breeding in sub-Saharan Africa: Toward an integrated program for improving productivity] ,  Animal breeding in sub-Saharan Africa: Toward an integrated program for improving productivity
Report 1983

Autor: Konandreas, P.A. Anderson, F.M. Trail, J.C.M.

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/4676

Investigación en Agricultura
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Konandreas, P.A. ,  Anderson, F.M. ,  Trail, J.C.M. ,  [Economic trade-offs between milk and meat production under various supplementation levels in Botswana] ,  Economic trade-offs between milk and meat production under various supplementation levels in Botswana
Report 1982

Autor: Fall, Abdou Diop, Mouhamadou Sandford, J. Wissocq, Y.J. Durkin, J.W. Trail, J.C.M.

Presents results of analysis of the reproductive performance, viability and growth performance traits of Djallonke sheep & N'dama cattle kept at the Centre de Recherches Zootechniques in Senegal; includes productivity indices for the two species built on the basis of the analyzed data.

Enlace original: https://cgspace.cgiar.org/handle/10568/4667

Investigación en Agricultura
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Fall, Abdou ,  Diop, Mouhamadou ,  Sandford, J. ,  Wissocq, Y.J. ,  Durkin, J.W. ,  Trail, J.C.M. ,  [Evaluation of the productivities of Djallonke sheep and N'Dama cattle at the Centre de Recherches Zootechniques, Kolda, Senegal] ,  Evaluation of the productivities of Djallonke sheep and N'Dama cattle at the Centre de Recherches Zootechniques, Kolda, Senegal
Report 1992

Autor: Trail, J.C.M. D'Ieteren, G.D.M.

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/50932

Investigación en Agricultura
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Trail, J.C.M. ,  D'Ieteren, G.D.M. ,  [Phenotypic and genetic parameter estimates of factors related to the performance of trypanotolerant livestock] ,  Phenotypic and genetic parameter estimates of factors related to the performance of trypanotolerant livestock
Report 1991

Autor: Trail, J.C.M. D'Ieteren, G.D.M. Murray, M.

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.

Enlace original: https://cgspace.cgiar.org/handle/10568/50956

Investigación en Agricultura
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Trail, J.C.M. ,  D'Ieteren, G.D.M. ,  Murray, M. ,  [Practical aspects of developing genetic resistance to trypanosomiasis] ,  Practical aspects of developing genetic resistance to trypanosomiasis
Report 1993

Autor: D'Ieteren, G.D.M. Trail, J.C.M.

Presentation des resultats de recherche ayant pour but de determiner des parametres genetiques fiables de la trypanotolerance, ces dermiers etaut necessaires pour le developpement et l'evaluaiton de programmes de selection pour la race N'Dama, et d'evalier l'utilite des premiers marqueurs utilisa...

Enlace original: https://cgspace.cgiar.org/handle/10568/50137

Investigación en Agricultura
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D'Ieteren, G.D.M. ,  Trail, J.C.M. ,  [Amelioration genetique du betail trypanotolerant: programmes en cours et futurs du CIPEA] ,  Amelioration genetique du betail trypanotolerant: programmes en cours et futurs du CIPEA
Report 1988

Autor: Sow, R.S. Denis, J.P. Trail, J.C.M.

Presentation des resultats d'une etude sur les possibilitis d'amelioration genetique du zebu Gobra au Senegal dependant beaucoup sur les correlations genetiques et phenotypiques et sur les heritabilites de la croissance de cette race.

Enlace original: https://cgspace.cgiar.org/handle/10568/50516

Investigación en Agricultura
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Sow, R.S. ,  Denis, J.P. ,  Trail, J.C.M. ,  [Facteurs de variation genetique de la productivite du zebu Gobra: Croissance avant et apres sevrage] ,  Facteurs de variation genetique de la productivite du zebu Gobra: Croissance avant et apres sevrage
Report 1986

Autor: Kiwuwa, G.H. Trail, J.C.M. Yousef, M.K. Worku, G. Anderson, F.M. Durkin, J.W.
Enlace original: https://cgspace.cgiar.org/handle/10568/91148

Investigación en Agricultura
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Kiwuwa, G.H. ,  Trail, J.C.M. ,  Yousef, M.K. ,  Worku, G. ,  Anderson, F.M. ,  Durkin, J.W. ,  [Productivité de bovins laitiers métis dans la région d'Arsi en Ethiopie] ,  Productivité de bovins laitiers métis dans la région d'Arsi en Ethiopie

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