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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: Carew, S.F. Sandford, J. Wissocq, Y.J. Durkin, J.W. Trail, J.C.M.

Examines the productivities of N'Dama cattle, introduced Sahiwal cattle, and Sahiwal X N'Dama crossbred at the Teko Livestock Station, Sierra Leone. Evaluates environmental and genetic effects relating to breed group, month and year of parturition or birth, age, sex, individual cow etc. as approp...

Enlace original: https://cgspace.cgiar.org/handle/10568/10876

Investigación en Agricultura
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Carew, S.F. ,  Sandford, J. ,  Wissocq, Y.J. ,  Durkin, J.W. ,  Trail, J.C.M. ,  [Productivite de bovins N'Dama a la station de Teko (Sierra Leone) et premiers resultats de croisements avec la race Sahiwal] ,  Productivite de bovins N'Dama a la station de Teko (Sierra Leone) et premiers resultats de croisements avec la race Sahiwal
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 1984

Autor: Trail, J.C.M. Gregory, K.E. Durkin, J.W. Sandford, J.

Compares two series of breed groups of cows for maternal traits from a three-year study in Kenya to identify breed crosses that are superior to the Boran purebreds; considers age at first calving, calving interval, calf weight at weaning, cow weight at weaning, calf mortality to weaning and cow p...

Enlace original: https://cgspace.cgiar.org/handle/10568/29771

Investigación en Agricultura
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Trail, J.C.M. ,  Gregory, K.E. ,  Durkin, J.W. ,  Sandford, J. ,  [Crossbreeding cattle in beef production programmes in Kenya. II. Comparison of purebred Boran and Boran crossed with the Red Poll and Santa Gertrudis breeds] ,  Crossbreeding cattle in beef production programmes in Kenya. II. Comparison of purebred Boran and Boran crossed with the Red Poll and Santa Gertrudis breeds
Journal Article 1986

Autor: Carew, S.F. Sandford, J. Wissocq, Y.J. Durkin, J.W. Trail, J.C.M.

Examines the productivities of N'Dama cattle, introduced Sahiwal cattle, and Sahiwal X N'Dama crossbred at the Teko Livestock Station, Sierra Leone. Evaluates environmental and genetic effects relating to breed group, month and year of parturition or birth, age, sex, individual cow etc. as approp...

Enlace original: https://cgspace.cgiar.org/handle/10568/4512

Investigación en Agricultura
Enlace permanente

Carew, S.F. ,  Sandford, J. ,  Wissocq, Y.J. ,  Durkin, J.W. ,  Trail, J.C.M. ,  [N'dama cattle productivity at Teko Livestock Station, Sierra Leone, and initial results from cross-breeding with Sahiwal] ,  N'dama cattle productivity at Teko Livestock Station, Sierra Leone, and initial results from cross-breeding with Sahiwal

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