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Conference Paper 1992

Autor: Reynolds, L. Baker, R.L. Sherington, J. Njubi, D.

Studies the within-and between-breed differences in resistance to natural infection with gastro-intestinal parasites and identifies genetic markers to aid in the selection of animals. Data analysed include PCV (Packed Cell Volume), live weight from birth to 360 days and faecal egg counts.

Enlace original: https://cgspace.cgiar.org/handle/10568/70837

Investigación en Agricultura
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Reynolds, L. ,  Baker, R.L. ,  Sherington, J. ,  Njubi, D. ,  [Resistance to gastro-intestinal parasites in Dorper and Red Maasai-Dorper crossbred sheep] ,  Resistance to gastro-intestinal parasites in Dorper and Red Maasai-Dorper crossbred sheep
Conference Paper 1996

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

The Menz and Horro highland sheep breeds are being evaluated at the ILCA Debre Birhan research station in Ethiopia for between-and within-breed genetic variation for resistance to internal parasites. The experimental design involves mating, for each breed, 150 ewes with 10 rams to lamb at the beg...

Enlace original: https://cgspace.cgiar.org/handle/10568/70866

Investigación en Agricultura
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Rege, J.E.O. ,  Tembely, S. ,  Mukasa, E. ,  Sovani, S. ,  Anindo, D.O. ,  Lahlou-Kassi, A. ,  Baker, R.L. ,  [Preliminary evidence for genetic resistance to endoparasites in Menz and Horro lambs in the highlands of Ethiopia] ,  Preliminary evidence for genetic resistance to endoparasites in Menz and Horro lambs in the highlands of Ethiopia
Conference Paper 1998

Autor: Baker, R.L. Rege, J.E.O. Tembely, S. Mukasa-Mugerwa, E. Anindo, D.O. Mwamachi, D.M. Thorpe, W.R. Lahlou-Kassi, A.

Research in Kenya has confirmed that Red Maasai sheep are more resistant to gastrointestinal parasites than Dorper sheep and has shown that Small East African goats are more resistant than Galla goats. There is no difference in resistance between the Menz and Horro sheep breeds in Ethiopia. Herit...

Enlace original: https://cgspace.cgiar.org/handle/10568/70874

Investigación en Agricultura
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Baker, R.L. ,  Rege, J.E.O. ,  Tembely, S. ,  Mukasa-Mugerwa, E. ,  Anindo, D.O. ,  Mwamachi, D.M. ,  Thorpe, W.R. ,  Lahlou-Kassi, A. ,  [Genetic resistance to gastrointestinal nematode parasites in some indigenous breeds of sheep and goats in East Africa] ,  Genetic resistance to gastrointestinal nematode parasites in some indigenous breeds of sheep and goats in East Africa
Conference Paper 1994

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

This study is evaluating the resistance of Red Maasai sheep to endoparasite infections relative to Dorper sheep and a range of Red Maasai x Dorper crosses. The results confirm previous reports that both Red Maasai ewes and lambs are more resistant to endoparasites (predominantly Haemonchus contor...

Enlace original: https://cgspace.cgiar.org/handle/10568/70852

Investigación en Agricultura
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Baker, R.L. ,  Mwamachi, D.M. ,  Audho, James O. ,  Thorpe, W.R. ,  [Genetic resistance to gastrointestinal nematode parasites in Red Maasai sheep in Kenya] ,  Genetic resistance to gastrointestinal nematode parasites in Red Maasai sheep in Kenya
Book 2004

Autor: Sani, R.A. Gray, G.D. Baker, R.L.

ACIAR funded a collaborative project between research organisations in Southeast Asia for ILRI and regional partners to explore new ways to control helminth parasites in the tropics. The project aimed to increase small ruminant production in Southeast Asia by controlling internal parasites, which...

Enlace original: https://cgspace.cgiar.org/handle/10568/2933

Investigación en Agricultura
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Sani, R.A. ,  Gray, G.D. ,  Baker, R.L. ,  [Worm control for small ruminants in tropical Asia] ,  Worm control for small ruminants in tropical Asia
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 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 2000

Autor: Morris, C.A. Vlassoff, A. Bisset, S.A. Baker, R.L. Watson, H.T.G. West, C.J. Wheeler, M.

Divergent breeding lines of Romney sheep, selected as lambs for consistently high or low faecal worm egg count (FEC) following natural multi-species challenge by nematode parasites, were established in New Zealand at Wallaceville Animal Research Centre in 1979 and at Rotomahana Station in 1985. I...

Enlace original: https://cgspace.cgiar.org/handle/10568/35322

Investigación en Agricultura
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Morris, C.A. ,  Vlassoff, A. ,  Bisset, S.A. ,  Baker, R.L. ,  Watson, H.T.G. ,  West, C.J. ,  Wheeler, M. ,  [Continued selection of Romney sheep for resistance or susceptibility to nematode infection: Estimates of direct and correlated responses] ,  Continued selection of Romney sheep for resistance or susceptibility to nematode infection: Estimates of direct and correlated responses

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