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Journal Article 1966

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

Production characteristics, covering ewe breeding data; growth of lambs and use of correction factors for parity of dam, sex and type of birth of lamb; ewe milk production as measured by early lamb growth; effects of dry season on lamb weights and ewe milk production; repeatabilities and phenotyp...

Enlace original: https://cgspace.cgiar.org/handle/10568/66817

Investigación en Agricultura
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Sacker, G.D. ,  Trail, J.C.M. ,  [Production characteristics of a flock of East African Blackhead sheep] ,  Production characteristics of a flock of East African Blackhead sheep
Journal Article 1966

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

The effects of birth weight, sex, twinning, parity of dam and dry season on mortality rates of lambs were studied between births and weaning at 20 weeks in a flock of East African Blackhead sheep. The mean birth weight of non-surviving lambs was lower than those of surviving lambs. Singles from g...

Enlace original: https://cgspace.cgiar.org/handle/10568/66787

Investigación en Agricultura
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Trail, J.C.M. ,  Sacker, G.D. ,  [Lamb mortality in a flock of East African Blackheaded sheep] ,  Lamb mortality in a flock of East African Blackheaded sheep
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 1985

Autor: Trail, J.C.M. Murray, M. Sones, Keith R. Jibbo, J.M.C. Durkin, J.W. Light, D.E.

Reports the productivity levels achieved by grade Boran cattle maintained by chemoprophylaxis at Mkwaja ranch (Tanzania) from 1973 to 1982. Analyses the effects of year and season of calving on birth, cow age, calf sex and area & location of herd on performance of the environmental influences. Ev...

Enlace original: https://cgspace.cgiar.org/handle/10568/28827

Investigación en Agricultura
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Trail, J.C.M. ,  Murray, M. ,  Sones, Keith R. ,  Jibbo, J.M.C. ,  Durkin, J.W. ,  Light, D.E. ,  [Boran cattle maintained by chemoprophylaxis under trypanosomiasis risk] ,  Boran cattle maintained by chemoprophylaxis under trypanosomiasis risk
Journal Article 1982

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

Presents comparative data on reproductive and productive performances of cows of pure Ayrshire and Sahiwal breeds or their reciprocal crosses and their progeny w. Ayrshire, Sahiwal, Simmental and mixed breed bulls in the lower to mid-potential temperate highland zone of Kenya; with particular ref...

Enlace original: https://cgspace.cgiar.org/handle/10568/29734

Investigación en Agricultura
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Trail, J.C.M. ,  Gregory, K.E. ,  [Production characters of the Sahiwal and Ayrshire breeds and their crosses in Kenya] ,  Production characters of the Sahiwal and Ayrshire breeds and their crosses in Kenya
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
Journal Article 1985

Autor: Trail, J.C.M. Murray, M. Sones, Keith R. Jibbo, J.M.C. Durkin, J.W. Light, D.E.

Reproductive performance, mortality, growth, and culling and replacement rates based on 20000 calving records were evaluated for grade Boran beef cattle maintained with trypanosomiasis risk in Tanzania. Under ranching conditions, over a 10-year period in this area of high Glossina moistens morsi...

Enlace original: https://cgspace.cgiar.org/handle/10568/66837

Investigación en Agricultura
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Trail, J.C.M. ,  Murray, M. ,  Sones, Keith R. ,  Jibbo, J.M.C. ,  Durkin, J.W. ,  Light, D.E. ,  [Boran cattle maintained by chemoprophylaxis under trypanosomiasis risk] ,  Boran cattle maintained by chemoprophylaxis under trypanosomiasis risk
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
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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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