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Book 1979

Autor: Trail, J.C.M. Hoste, Christian H. Wissocq, Y.J. Lhoste, Ph. Mason, I.L.

Review of the classification, geographic distribution, animal performance and productivity of trypanotolerant cattle, sheep and goats in 18 countries of west & central Africa, particularly N'dama cattle, West African Dwarf Shorthorn, and Zebu x N'Dama crossbreeds. Discussion on potential utilizat...

Enlace original: https://cgspace.cgiar.org/handle/10568/4225

Investigación en Agricultura
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Trail, J.C.M. ,  Hoste, Christian H. ,  Wissocq, Y.J. ,  Lhoste, Ph. ,  Mason, I.L. ,  [Trypanotolerant livestock in West and Central Africa. Volume 1. General study] ,  Trypanotolerant livestock in West and Central Africa. Volume 1. General study
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
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
Journal Article 1984

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

Presented data on maternal traits, i.e.Age at first calving, calving interval, calf weaning weight and cow productivity index, of pure Boran and Boran crossbred w. each of Charolais, Ayrshire and Santa Gertrudis on privately owned ranches in Machakos District, Kenya.

Enlace original: https://cgspace.cgiar.org/handle/10568/29735

Investigación en Agricultura
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Gregory, K.E. ,  Trail, J.C.M. ,  Sandford, J. ,  Durkin, J.W. ,  [Crossbreeding cattle in beef production programmes in Kenya. I. Comparison of purebred Boran and Boran crossed with the Charolais, Ayrshire and Santa Gertrudis breeds] ,  Crossbreeding cattle in beef production programmes in Kenya. I. Comparison of purebred Boran and Boran crossed with the Charolais, Ayrshire and Santa Gertrudis breeds
Book 1981

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

Evaluates and compares the productivity under commercial management levels of Sahiwals, Sahiwal/Ayrshire crossbreeds, indigenous Small East African Zebus and Boran, using data from 5 herds in Kenya, with particular reference to reproductive and growth characters, milk production, viability and in...

Enlace original: https://cgspace.cgiar.org/handle/10568/4224

Investigación en Agricultura
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Trail, J.C.M. ,  Gregory, K.E. ,  [Sahiwal cattle: An evaluation of their potential contribution to milk and beef production in Africa] ,  Sahiwal cattle: An evaluation of their potential contribution to milk and beef production in Africa
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 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
Book Chapter 1984

Autor: Trail, J.C.M.

Compares the productivity of Africander, Tswana and Tuli cattle using indices calculated from data on reproductive performance, viability and growth; also evaluates the crossbreeding potentials of the Tswana breed.

Enlace original: https://cgspace.cgiar.org/handle/10568/50127

Investigación en Agricultura
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Trail, J.C.M. ,  [Africander, Tswana and Tuli cattle of Southern Africa: Breed characterization separates fact from fiction] ,  Africander, Tswana and Tuli cattle of Southern Africa: Breed characterization separates fact from fiction
Journal Article 1963

Autor: Trail, J.C.M.

Nine hundred cockerels of indigenous Light Sussex X indigenous, Rhode island red X indigenous, Black Australorp X indigenous, white Leghorn X indigenous and three pure imported breeds were reared from day old to 5 months of age, and growth rates, food consumption, feed conversion, killing out per...

Enlace original: https://cgspace.cgiar.org/handle/10568/67014

Investigación en Agricultura
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Trail, J.C.M. ,  [Meat production from indigenous, crossbred and imported poultry in Uganda] ,  Meat production from indigenous, crossbred and imported poultry in Uganda

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