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Journal Article 1977

Autor: Trail, J.C.M. Rennie, T.W.

Describes the system of performance testing operating in Botswana & its value for the genetic improvement of beef cattle, examining dif. aspects of data collection, handling, analysis & use within a computerized system, & recording traits such as reproductive performance, growth, viability & moth...

Enlace original: https://cgspace.cgiar.org/handle/10568/28619

Investigación en Agricultura
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Trail, J.C.M. ,  Rennie, T.W. ,  [Botswana: Performance testing of beef cattle] ,  Botswana: Performance testing of beef cattle
Journal Article 1982

Autor: Cartwright, T.C. Anderson, F.M. Buck, N.G. Nelsen, T.C. Trail, J.C.M. Pratchett, D. Sanders, J. Astle, W. Light, D.E. Rennie, T.W. Rose, T.J. Shorrock, C.

Discusses use of mathematical modelling as a research tool to evaluate alternative practices, illustrating its application in beef cattle production systems in Botswana, with a description of data inputs, model utilized & simulations carried out. Compares actual & simulated values and examines ef...

Enlace original: https://cgspace.cgiar.org/handle/10568/28626

Investigación en Agricultura
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Cartwright, T.C. ,  Anderson, F.M. ,  Buck, N.G. ,  Nelsen, T.C. ,  Trail, J.C.M. ,  Pratchett, D. ,  Sanders, J. ,  Astle, W. ,  Light, D.E. ,  Rennie, T.W. ,  Rose, T.J. ,  Shorrock, C. ,  [Systems modelling in cattle production - an application in Botswana] ,  Systems modelling in cattle production - an application in Botswana
Journal Article 1977

Autor: Pratchett, D. Capper, B. Light, D. Miller, M. Rutherford, A.S. Rennie, T. Buck, N. Trail, J.C.M.

Evaluates the usefulness of different range parameters for establishing limiting factors to growth of beef cattle, particularly crude protein content and dry matter digestibility of herbage.

Enlace original: https://cgspace.cgiar.org/handle/10568/29106

Investigación en Agricultura
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Pratchett, D. ,  Capper, B. ,  Light, D. ,  Miller, M. ,  Rutherford, A.S. ,  Rennie, T. ,  Buck, N. ,  Trail, J.C.M. ,  [Factors limiting liveweight gain of beef cattle on rangeland in Botswana] ,  Factors limiting liveweight gain of beef cattle on rangeland in Botswana
Journal Article 1985

Autor: Trail, J.C.M. Gregory, K.E. Marples, H.J.S. Kakonge, J.

Presents results of a study conducted to estimate the effects of heterosis and breed on a series of maternal and individual traits; uses Boran X Ankole and Boran X Zebu as crossbred cows and Ankole, Boran and Small East African Zebu as straight-bred cows; includes calf crop born, preweaning viabi...

Enlace original: https://cgspace.cgiar.org/handle/10568/32979

Investigación en Agricultura
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Trail, J.C.M. ,  Gregory, K.E. ,  Marples, H.J.S. ,  Kakonge, J. ,  [Comparison of Bos taurus - Bos indicus breed crosses with straight bred Bos indicus breeds of cattle for maternal and individual traits] ,  Comparison of Bos taurus - Bos indicus breed crosses with straight bred Bos indicus breeds of cattle for maternal and individual traits
Journal Article 1985

Autor: Gregory, K.E. Trail, J.C.M. Marples, H.J.S. Kakonge, J.

Presents results of a study conducted to estimate the effects of heterosis and breed on a series of maternal and individual traits; takes Boran X Ankole and Boran X Zebu as crossbred cows and Ankole, Boran and Small East African Zebu as straightbred cows; includes traits like calf crop born, prew...

Enlace original: https://cgspace.cgiar.org/handle/10568/32982

Investigación en Agricultura
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Gregory, K.E. ,  Trail, J.C.M. ,  Marples, H.J.S. ,  Kakonge, J. ,  [Heterosis and breed effects on maternal and individual traits of Bos indicus breeds of cattle] ,  Heterosis and breed effects on maternal and individual traits of Bos indicus breeds of cattle
Journal Article 1985

Autor: Gregory, K.E. Trail, J.C.M. Marples, H.J.S. Kakonge, J.

Compares individual as well as maternal traits of different breeds of Bos indicus and Bos taurus cattle interms of cow weight at parturition, weaning and at dif. stages after parturition, calf crop, viability and weight at dif. ages.

Enlace original: https://cgspace.cgiar.org/handle/10568/32983

Investigación en Agricultura
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Gregory, K.E. ,  Trail, J.C.M. ,  Marples, H.J.S. ,  Kakonge, J. ,  [Characterization of breeds of Bos indicus and Bos taurus cattle for maternal and individual traits] ,  Characterization of breeds of Bos indicus and Bos taurus cattle for maternal and individual traits
Journal Article 1977

Autor: Trail, J.C.M. Buck, N.G. Light, D.E. Rennie, T.W. Rutherford, A.S. Miller, M. Pratchett, D. Capper, B.

Evaluation of reproductive performance, viability and growth of Afrikander, Tswana, Tuli and crossbred beef cattle in Botswana; data on calving percentage, calf mortality, weaning & birth weights, w. comparison of crossbreeding performance of Tuli, Bonsmara cattle, Brahman cattle & Simmental catt...

Enlace original: https://cgspace.cgiar.org/handle/10568/28257

Investigación en Agricultura
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Trail, J.C.M. ,  Buck, N.G. ,  Light, D.E. ,  Rennie, T.W. ,  Rutherford, A.S. ,  Miller, M. ,  Pratchett, D. ,  Capper, B. ,  [Productivity of Africander, Tswana, Tuli and crossbred beef cattle in Botswana] ,  Productivity of Africander, Tswana, Tuli and crossbred beef cattle in Botswana
Journal Article 1988

Autor: Tawonezvi, H.P.R. Ward, H.K. Trail, J.C.M. Light, D.E.

Assesses reproductive performance, body weight & live weight, pre-weaning growth, and viability of progeny sired by various unrelated breeds which are representative of the Sanga X Sanga, Sanga X Zebu, Bos taurus X Sanga, Bos taurus X Zebu, and Bos taurus X Bos taurus crossbred groups. Measures t...

Enlace original: https://cgspace.cgiar.org/handle/10568/28277

Investigación en Agricultura
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Tawonezvi, H.P.R. ,  Ward, H.K. ,  Trail, J.C.M. ,  Light, D.E. ,  [Evaluation of beef breeds for rangeland weaner production in Zimbabwe. 2. Productivity of crossbred cows and heterosis estimates] ,  Evaluation of beef breeds for rangeland weaner production in Zimbabwe. 2. Productivity of crossbred cows and heterosis estimates
Journal Article 1988

Autor: Tawonezvi, H.P.R. Ward, H.K. Trail, J.C.M. Light, D.E.

A study conducted to assess weaner production of the indigenous and exotic breeds in Zimbabwe and crossbred cows.

Enlace original: https://cgspace.cgiar.org/handle/10568/28276

Investigación en Agricultura
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Tawonezvi, H.P.R. ,  Ward, H.K. ,  Trail, J.C.M. ,  Light, D.E. ,  [Evaluation of beef breeds for rangeland weaner production in Zimbabwe. 1. Productivity of purebred cows] ,  Evaluation of beef breeds for rangeland weaner production in Zimbabwe. 1. Productivity of purebred cows
Journal Article 1981

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

Results of a study conducted in the Rift Valley Province of Kenya comparing pedigree Boran & Sahiwal cattle in order to assess their potential as beef producing animals. Analyzes records on cows & their calves for reproductive characters such as age at first calving, calving interval & growth & m...

Enlace original: https://cgspace.cgiar.org/handle/10568/32978

Investigación en Agricultura
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Trail, J.C.M. ,  Gregory, K.E. ,  [Characterization of the Boran and Sahiwal breeds of cattle for economic characters] ,  Characterization of the Boran and Sahiwal breeds of cattle for economic characters

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