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Journal Article 1996

Sources of genetic variation for milk production in a crossbred herd in the tropics

Autor: Mackinnon, M.J. Thorpe, W.R. Baker, R.L.

Crossbreeding parameters and variance components were estimated for lactation and reproductive traits of crosses between the Sahiwal, Brown Swiss and Ayrshire breeds in a dairy herd in sub-humid coastal Kenya. An individual animal model was fitted to the data with a fixed effect for 20 distinct b...

Enlace original: https://cgspace.cgiar.org/handle/10568/28313

Investigación en Agricultura

TROPICS

MILK PRODUCTION

CROSSBREDS

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Mackinnon, M.J. , Thorpe, W.R. , Baker, R.L. , [Sources of genetic variation for milk production in a crossbred herd in the tropics] , Sources of genetic variation for milk production in a crossbred herd in the tropics

Journal Article 2003

Survival of Red Maasai, Dorper and crossbred lambs in the sub-humid tropics

Autor: Nguti, R. Janssen, P. Rowlands, G.J. Audho, James O. Baker, R.L.

The survival rates of Dorper, Red Maasai and crossbred lambs born over a period of 6 years at Diani Estate, Coast Province, Kenya were compared using the Cox mixed proportional hazards model with a random (frailty) term for sire. Of the 1785 lambs born, proportionately 0.44 died before they were ...

Enlace original: https://cgspace.cgiar.org/handle/10568/28328

Investigación en Agricultura

SHEEP

LAMBS

CROSSBREDS

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Nguti, R. , Janssen, P. , Rowlands, G.J. , Audho, James O. , Baker, R.L. , [Survival of Red Maasai, Dorper and crossbred lambs in the sub-humid tropics] , Survival of Red Maasai, Dorper and crossbred lambs in the sub-humid tropics

Journal Article 1995

Estimation of individual and maternal additive genetic and heterotic effects for preweaning traits of crosses of Ayrshire, Brown Swiss and Sahiwal cattle in the lowland tropics of Kenya

Autor: Kahi, A.K. Mackinnon, M.J. Thorpe, W.R. Baker, R.L. Njubi, D.

A total of 1443 records were used to estimate individual and maternal additive genetic breed and heterotic effects for preweaning growth and survival traits of crosses of Ayrshire (A), Brown Swiss (B), and Sahiwal (S) in a dairy herd in the lowland coastal tropics of Kenya. Individual and matern...

Enlace original: https://cgspace.cgiar.org/handle/10568/29183

Investigación en Agricultura

TROPICS

DAIRY CATTLE

GENETIC PARAMETERS

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Kahi, A.K. , Mackinnon, M.J. , Thorpe, W.R. , Baker, R.L. , Njubi, D. , [Estimation of individual and maternal additive genetic and heterotic effects for preweaning traits of crosses of Ayrshire, Brown Swiss and Sahiwal cattle in the lowland tropics of Kenya] , Estimation of individual and maternal additive genetic and heterotic effects for preweaning traits of crosses of Ayrshire, Brown Swiss and Sahiwal cattle in the lowland tropics of Kenya

Journal Article 2005

Evaluation of the phenotypic performance of a Red Maasai and Dorper double backcross resource population: Natural pasture challenge with gastro-intestinal nematode parasites

Autor: Mugambi, J.M.M. Audho, James O. Baker, R.L.

Six first cross (F1) Red Maasai X Dorper rams were mated to both Red Maasai (R) and Dorper (D) ewes to produce 1342 double backcross progeny (672 3/4 D/1/4 R and 670 3/4 R/1/4 D lambs born alive). These six double backcross resource families are being used to identify quantitative trait loci con...

Enlace original: https://cgspace.cgiar.org/handle/10568/33176

Investigación en Agricultura

SHEEP [CAPRINAE]

DIGESTIVE SYSTEM DISEASES

NEMATODA

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Mugambi, J.M.M. , Audho, James O. , Baker, R.L. , [Evaluation of the phenotypic performance of a Red Maasai and Dorper double backcross resource population: Natural pasture challenge with gastro-intestinal nematode parasites] , Evaluation of the phenotypic performance of a Red Maasai and Dorper double backcross resource population: Natural pasture challenge with gastro-intestinal nematode parasites

Journal Article 2005

Evaluation of the phenotypic performance of a Red Maasai and Dorper double backcross resource population: Indoor trickle challenge with Haemonchus contortus

Autor: Mugambi, J.M.M. Audho, James O. Njomo, S. Baker, R.L.

Six F1 Dorper (D) x Red Maasai (R) rams were mated to both D and R ewes to produce backcross lambs. These six double backcross resource families are being analysed to identify quantitative trait loci that may be controlling resistance to gastro-intestinal (GI) nematode parasites, mainly Haemonchu...

Enlace original: https://cgspace.cgiar.org/handle/10568/33236

Investigación en Agricultura

SHEEP [CAPRINAE]

CROSSBREDS

EWES

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Mugambi, J.M.M. , Audho, James O. , Njomo, S. , Baker, R.L. , [Evaluation of the phenotypic performance of a Red Maasai and Dorper double backcross resource population: Indoor trickle challenge with Haemonchus contortus] , Evaluation of the phenotypic performance of a Red Maasai and Dorper double backcross resource population: Indoor trickle challenge with Haemonchus contortus

Journal Article 1999

Genetic resistance to gastro-intestinal nematode parasites in red Maasai, Dorper and Red Maasai X Dorper ewes in the sub-humid tropics

Autor: Baker, R.L. Mwamachi, D.M. Audho, James O. Aduda, Eric O. Thorpe, W.R.

Resistance to naturally acquired gastro-intestinal (GI) nematode parasite infections (predominantly Haemonchus contortus) was studied in 166 Red Maasai; 230 Dorper and 294 crossbred (Red Maasai X Dorper) ewes in the sub-humid coastal region of Kenya. Live weights (LWT), blood packed-cell volume (...

Enlace original: https://cgspace.cgiar.org/handle/10568/28325

Investigación en Agricultura

SHEEP

GENETIC RESISTANCE

GASTROINTESTINAL DISEASES

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Baker, R.L. , Mwamachi, D.M. , Audho, James O. , Aduda, Eric O. , Thorpe, W.R. , [Genetic resistance to gastro-intestinal nematode parasites in red Maasai, Dorper and Red Maasai X Dorper ewes in the sub-humid tropics] , Genetic resistance to gastro-intestinal nematode parasites in red Maasai, Dorper and Red Maasai X Dorper ewes in the sub-humid tropics

Journal Article 2003

Resistance and resilience to gastro-intestinal nematode parasites and relationships with productivity of Red Maasai, Dorper and Red Maasai X Dorper crossbred lambs in the sub-humid tropics

Autor: Baker, R.L. Nagda, S.M. Rodríguez Zas, S.L. Southey, B.R. Audho, James O. Aduda, Eric O. Thorpe, W.R.

Resistance and resilience to naturally acquired gastro-intestinal (GI) nematode parasite infections (predominantly Haemonchus contortus) were studied in 1785 lambs born over six lambings (1991 to 1996) consisting of 212 Red Maasai, 311 Dorper and 1262 crossbred (Red Maasai-Dorper) lambs in the su...

Enlace original: https://cgspace.cgiar.org/handle/10568/28329

Investigación en Agricultura

TROPICS

SHEEP

HAEMONCHUS CONTORTUS

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Baker, R.L. , Nagda, S.M. , Rodríguez Zas, S.L. , Southey, B.R. , Audho, James O. , Aduda, Eric O. , Thorpe, W.R. , [Resistance and resilience to gastro-intestinal nematode parasites and relationships with productivity of Red Maasai, Dorper and Red Maasai X Dorper crossbred lambs in the sub-humid tropics] , Resistance and resilience to gastro-intestinal nematode parasites and relationships with productivity of Red Maasai, Dorper and Red Maasai X Dorper crossbred lambs in the sub-humid tropics

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Resultados de búsqueda

Sources of genetic variation for milk production in a crossbred herd in the tropics

Survival of Red Maasai, Dorper and crossbred lambs in the sub-humid tropics

Estimation of individual and maternal additive genetic and heterotic effects for preweaning traits of crosses of Ayrshire, Brown Swiss and Sahiwal cattle in the lowland tropics of Kenya

Evaluation of the phenotypic performance of a Red Maasai and Dorper double backcross resource population: Natural pasture challenge with gastro-intestinal nematode parasites

Evaluation of the phenotypic performance of a Red Maasai and Dorper double backcross resource population: Indoor trickle challenge with Haemonchus contortus

Genetic resistance to gastro-intestinal nematode parasites in red Maasai, Dorper and Red Maasai X Dorper ewes in the sub-humid tropics

Resistance and resilience to gastro-intestinal nematode parasites and relationships with productivity of Red Maasai, Dorper and Red Maasai X Dorper crossbred lambs in the sub-humid tropics