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Journal Article 1971

Autor: Trail, J.C.M. Sacker, G.D. Fisher, I.L.

Three dam breeds, the indigenous Ankole and zebu, and the Boran from Kenya were mated to Boran Angus and Red Poll sires to investigate the relationship between dam body weight and progeny performance. Under artificial insemination, at least 10% fewer cows were detected on heat than under natural ...

Enlace original: https://cgspace.cgiar.org/handle/10568/66845

Investigación en Agricultura
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Trail, J.C.M. ,  Sacker, G.D. ,  Fisher, I.L. ,  [Crossbreeding beef cattle in western Uganda. 1. Performance of Ankole, Boran and zebu cows] ,  Crossbreeding beef cattle in western Uganda. 1. Performance of Ankole, Boran and zebu cows
Journal Article 1966

Autor: Trail, J.C.M. Sacker, G.D.

Dorset Horn rams were used on East African Blackhead sheep in western Uganda in mutton production through improved lamb growth. The crossbred lambs were significantly heavier than the indigenous at birth. From birth to weaning at five months, the growth rates of both types were identical, being 0...

Enlace original: https://cgspace.cgiar.org/handle/10568/66830

Investigación en Agricultura
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Trail, J.C.M. ,  Sacker, G.D. ,  [Production records of lambs from East African Blackhead ewes and Dorset Horn rams] ,  Production records of lambs from East African Blackhead ewes and Dorset Horn rams
Journal Article 1986

Autor: Brumby, P.J. Trail, J.C.M.

Summarises the work that ILCA is doing to assemble what information is available on livestock breeds and breeding in sub-Saharan Africa.

Enlace original: https://cgspace.cgiar.org/handle/10568/10877

Investigación en Agricultura
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Brumby, P.J. ,  Trail, J.C.M. ,  [Les etudes sur les races et la productivite du betail en Afrique] ,  Les etudes sur les races et la productivite du betail en Afrique
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 1983

Autor: Trail, J.C.M.
Enlace original: https://cgspace.cgiar.org/handle/10568/12571

Investigación en Agricultura
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Trail, J.C.M. ,  [Cattle breed evaluation studies by the International Livestock Center for Africa (ILCA)] ,  Cattle breed evaluation studies by the International Livestock Center for Africa (ILCA)
Journal Article 1986

Autor: Brumby, P.J. Trail, J.C.M.

Summarises the work that ILCA is doing to assemble what information is available on livestock breeds and breeding in sub-Saharan Africa.

Enlace original: https://cgspace.cgiar.org/handle/10568/4510

Investigación en Agricultura
Enlace permanente

Brumby, P.J. ,  Trail, J.C.M. ,  [Animal breeding and productivity studies in Africa] ,  Animal breeding and productivity studies in Africa

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