Red Maasai and Dorper sheep were evaluated for their resistance to gastro-intestinal (GI) nematode parasites (predominantly Haemonchus contortus), productivity and productive efficiency (assessed on a metabolizable energy basis) in experiments undertaken at the Kenyan coast (sub-humid environment...
Baker, R.L.
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Mugambi, J.M.M.
,
Audho, James O.
,
Carles, A.B.
,
Thorpe, W.R.
,
[Genotype by environment interactions for productivity and resistance to gastro-intestinal nematode parasites in Red Maasai and Dorper sheep]
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Genotype by environment interactions for productivity and resistance to gastro-intestinal nematode parasites in Red Maasai and Dorper sheep
The host-protective immune response to infection with gastrointestinal (GI) nematodes involves a range of interacting processes that begin with recognition of the parasite's antigens and culminate in an inflammatory reaction in the intestinal mucosa. Precisely which immune effectors are responsib...
Behnke, J.M.
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Iraqi, F.A.
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Menge, D.
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Baker, R.L.
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Gibson, John P.
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Wakelin, D.
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[Chasing the genes that control resistance to gastrointestinal nematodes]
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Chasing the genes that control resistance to gastrointestinal nematodes
Since the publication of the mouse genome, attention has focused on the strains that were selected for sequencing. In this paper we report the results of experiments that characterized the response to infection with the murine gastrointestinal nematode Heligmosomoides polygyrus of eight new strai...
Behnke, J.M.
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Mugambi, J.M.M.
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Clifford, S.
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Iraqi, F.A.
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Baker, R.L.
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Gibson, John P.
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Wakelin, D.
,
[Genetic variation in resistance to repeated infections with Heligmosomoides polygyrus bakeri, in inbred mouse strains selected for the mouse genome project]
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Genetic variation in resistance to repeated infections with Heligmosomoides polygyrus bakeri, in inbred mouse strains selected for the mouse genome project
A study was carried out from 1994 to 1996 to compare the resistance to naturally acquired gastrointestinal (GI) nematode infections (predominantly Haemonchus contortus) of 88 Galla and 114 Small East Africa (SEA) goats (does) in the sub-humid coastal region of Kenya. Live weights (LWT), blood pac...
Baker, R.L.
,
Mwamachi, D.M.
,
Audho, James O.
,
Aduda, Eric O.
,
Thorpe, W.R.
,
[Resistance of Galla and Small East African goats in the sub-humid tropics to gastrointestinal nematode infections and the peri-parturient rise in faecal egg counts]
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Resistance of Galla and Small East African goats in the sub-humid tropics to gastrointestinal nematode infections and the peri-parturient rise in faecal egg counts
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 (...
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]
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Genetic resistance to gastro-intestinal nematode parasites in red Maasai, Dorper and Red Maasai X Dorper ewes in the sub-humid tropics
The purpose of this chapter is two-fold. First, the information available on breeds of sheep and goats that are resistant or resilient to helminthiasis (mainly the GI nematodes) infections are reviewed. This is important information for inclusion of appropriate breeds in integrated endoparasite c...
Baker, R.L.
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Gray, G.D.
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[Appropriate breeds and breeding schemes for sheep and goats in the tropics]
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Appropriate breeds and breeding schemes for sheep and goats in the tropics
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...
Baker, R.L.
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Rege, J.E.O.
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Tembely, S.
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Mukasa-Mugerwa, E.
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Anindo, D.O.
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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]
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Genetic resistance to gastrointestinal nematode parasites in some indigenous breeds of sheep and goats in East Africa
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...
Baker, R.L.
,
Mwamachi, D.M.
,
Audho, James O.
,
Thorpe, W.R.
,
[Genetic resistance to gastrointestinal nematode parasites in Red Maasai sheep in Kenya]
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Genetic resistance to gastrointestinal nematode parasites in Red Maasai sheep in Kenya
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...
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]
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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
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...