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Journal Article 1999

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
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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 2012-02-15

Autor: Silva, M.V.B. Sonstegard, T.S. Hanotte, Olivier H. Mugambi, J.M.M. García, J.F. Nagda, S.M. Gibson, John P. Iraqi, F.A. McClintock, A.E. Kemp, Stephen J. Boettcher, P.J. Malek, M. Tassell, C.P. van Baker, R.L.

A genome-wide scan for quantitative trait loci (QTL) affecting gastrointestinal nematode resistance in sheep was completed using a double backcross population derived from Red Maasai and Dorper ewes bred to F1 rams. This design provided an opportunity to map potentially unique genetic variation a...

Enlace original: https://cgspace.cgiar.org/handle/10568/72662

Investigación en Agricultura
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Silva, M.V.B. ,  Sonstegard, T.S. ,  Hanotte, Olivier H. ,  Mugambi, J.M.M. ,  García, J.F. ,  Nagda, S.M. ,  Gibson, John P. ,  Iraqi, F.A. ,  McClintock, A.E. ,  Kemp, Stephen J. ,  Boettcher, P.J. ,  Malek, M. ,  Tassell, C.P. van ,  Baker, R.L. ,  [Identification of quantitative trait loci affecting resistance to gastrointestinal parasites in a double backcross population of Red Maasai and Dorper sheep] ,  Identification of quantitative trait loci affecting resistance to gastrointestinal parasites in a double backcross population of Red Maasai and Dorper sheep
Journal Article 2003

Autor: Matika, O. Wyk, J.B. van Erasmus, G.J. Baker, R.L.

Genetic parameters for growth traits in Sabi sheep were estimated using from data records of 4123 lambs from 130 sires and 1131 dams collected between 1984 and 1994. Reproduction traits and lamb survival to weaning were analysed fitting a sire threshold model. The direct additive contribution t...

Enlace original: https://cgspace.cgiar.org/handle/10568/29173

Investigación en Agricultura
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Matika, O. ,  Wyk, J.B. van ,  Erasmus, G.J. ,  Baker, R.L. ,  [Genetic parameter estimates in Sabi sheep] ,  Genetic parameter estimates in Sabi sheep
Journal Article 2004

Autor: Haile, Aynalem Anindo, D.O. Tembely, S. Mukasa-Mugerwa, E. Tibbo, Markos Yami, A. Baker, R.L. Rege, J.E.O.

The effect of subclinical artificial nematode parasite infection on dry matter intake (DMI), apparent digestibility (AD), efficiency of feed utilisation (EFU), plasma protein (PPC) and albumin concentrations (AC) was examined in lambs of the Horro and Menz breeds. The factorial experimental desi...

Enlace original: https://cgspace.cgiar.org/handle/10568/29179

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Haile, Aynalem ,  Anindo, D.O. ,  Tembely, S. ,  Mukasa-Mugerwa, E. ,  Tibbo, Markos ,  Yami, A. ,  Baker, R.L. ,  Rege, J.E.O. ,  [Effects of dietary protein supplementation and infection with gastrointestinal nematode parasites on some nutritional and metabolic parameters in Ethiopian Menz and Horro sheep] ,  Effects of dietary protein supplementation and infection with gastrointestinal nematode parasites on some nutritional and metabolic parameters in Ethiopian Menz and Horro sheep
Journal Article 2004

Autor: Kosgey, I.S. Arendonk, Johan A.M. van Baker, R.L.

In traditional management systems in the tropics, sheep constitute a source of easily convertible capital for financing purposes and insurance, a means of cultural and ceremonial functions, and a source of prestige, meat, manure and skins. In this study, breeding objectives were derived for an i...

Enlace original: https://cgspace.cgiar.org/handle/10568/29176

Investigación en Agricultura
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Kosgey, I.S. ,  Arendonk, Johan A.M. van ,  Baker, R.L. ,  [Economic values for traits in breeding objectives for sheep in the tropics: Impact of tangible and intangible benefits] ,  Economic values for traits in breeding objectives for sheep in the tropics: Impact of tangible and intangible benefits
Journal Article 2000

Autor: Toe, F. Rege, J.E.O. Mukasa-Mugerwa, E. Tembely, S. Anindo, D.O. Baker, R.L. Lahlou-Kassi, A.

A study was conducted to estimate heritabilities of, and genetic correlations among, body weight (WT) and testicular measurements - scrotal circumference (SC), testicular diameter (TD), testicular length (TL) and epididymal diameter (ED - in ram lambs between 6, 9 and 12 months old, and relations...

Enlace original: https://cgspace.cgiar.org/handle/10568/29609

Investigación en Agricultura
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Toe, F. ,  Rege, J.E.O. ,  Mukasa-Mugerwa, E. ,  Tembely, S. ,  Anindo, D.O. ,  Baker, R.L. ,  Lahlou-Kassi, A. ,  [Reproductive characteristics of Ethiopian highland sheeI. Genetic parameters of testicular measurements in ram lambs and relationship with age at puberty in ewe lambs] ,  Reproductive characteristics of Ethiopian highland sheeI. Genetic parameters of testicular measurements in ram lambs and relationship with age at puberty in ewe lambs
Journal Article 2000

Autor: Rege, J.E.O. Toe, F. Mukasa-Mugerwa, E. Tembely, S. Anindo, D.O. Baker, R.L. Lahlou-Kassi, A.

A study was conducted to investigate the effect of season on, and to estimate heritabilities of, and genetic correlations among, semen and spermatozoa characteristics and the relationship of these characteristics with measures of testicular or scrotal size in 6-, 9- and 12-month old ram lambs of ...

Enlace original: https://cgspace.cgiar.org/handle/10568/29624

Investigación en Agricultura
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Rege, J.E.O. ,  Toe, F. ,  Mukasa-Mugerwa, E. ,  Tembely, S. ,  Anindo, D.O. ,  Baker, R.L. ,  Lahlou-Kassi, A. ,  [Reproductive characteristics of Ethiopian highland sheep. II. Genetic parameters of semen characteristics and their relationships with testicular measurements in ram lambs] ,  Reproductive characteristics of Ethiopian highland sheep. II. Genetic parameters of semen characteristics and their relationships with testicular measurements in ram lambs
Journal Article 1998

Autor: Baker, R.L.

The evidence for both between-and within-breed genetic variation for resistance to gastrointestinal (GI) nematode parasites is reviewed. It is concluded that much of the published research on breed characterisation for resistance suffers from poor experimental design. Prior to the initiation of a...

Enlace original: https://cgspace.cgiar.org/handle/10568/28636

Investigación en Agricultura
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Baker, R.L. ,  [Genetic resistance to endoparasites in sheep and goats. A review of genetic resistance to gastrointestinal nematode parasites in sheep and goats in the tropics and evidence for resistance in some sheep and goat breeds in sub-humid coastal Kenya] ,  Genetic resistance to endoparasites in sheep and goats. A review of genetic resistance to gastrointestinal nematode parasites in sheep and goats in the tropics and evidence for resistance in some sheep and goat breeds in sub-humid coastal Kenya
Journal Article 1997

Autor: Baker, R.L.

Il existe en Afrique une tres grande diversite de races locales de bovins, ovins et caprins, parmil lesquelles certaines presentent des aptitudes genetiques particulieres a resister et/ou a tolerer les maladies. Cet article passe en revue les donnees encore eparses existant sur les variabilite in...

Enlace original: https://cgspace.cgiar.org/handle/10568/28771

Investigación en Agricultura
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Baker, R.L. ,  [Resistance genetique des petits ruminants aux helminthes en Afrique] ,  Resistance genetique des petits ruminants aux helminthes en Afrique
Journal Article 1999

Autor: Baker, R.L.

There was considerable interest and discussion related to the progress made in both the Australian and New Zealand breeding schemes that assist commercial ram breeders to incorporate selection for resistance to gastrointestinal nematode parasites into their breeding programmes along with selectio...

Enlace original: https://cgspace.cgiar.org/handle/10568/28795

Investigación en Agricultura
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Baker, R.L. ,  [Genetics of resistance to endoparasites and ectoparasites] ,  Genetics of resistance to endoparasites and ectoparasites

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