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Resistance to nematode parasites can be improved by selection, but efforts to include appropriate traits in commercial livestock breeding programs are only a recent development. Procedures for including resistance in breeding programs are similar to those involving other traits. The steps are des...


Woolaston, R.R.Baker, R.L.[Prospects of breeding small ruminants for resistance to internal parasites]Prospects of breeding small ruminants for resistance to internal parasites

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.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]Genotype by environment interactions for productivity and resistance to gastro-intestinal nematode parasites in Red Maasai and Dorper sheep

This paper reports the results of a genome-wide search for quantitative trait loci (QTL) influencing immunological responses to infection with the gastro-intestinal nematode parasite Heligmosomoides polygyrus in an F2 population created by crossing the resistant SWR and the susceptible CBA inbr...


Menge, D.M.Behnke, J.M.Lowe, A.Gibson, John P.Iraqi, F.A.Baker, R.L.Wakelin, D.[Mapping of chromosomal regions influencing immunological responses to gastrointestinal nematode infections in mice]Mapping of chromosomal regions influencing immunological responses to gastrointestinal nematode infections in mice

Crossbreeding parameters for milk production and reproductive traits and for cow live weight (LW) of crosses of Ayrshire (A), Brown Swiss (B), Friesian (F) and Sahiwal (S) cattle were estimated using data from a dairy herd in the lowland coastal tropics of Kenya. An individual animal model was fi...


Kahi, A.K.Thorpe, W.R.Nitter, G.Baker, R.L.[Crossbreeding for dairy production in the lowland tropics of Kenya. I. Estimation of individual crossbreeding effects on milk production and reproductive traits and on cow live weight]Crossbreeding for dairy production in the lowland tropics of Kenya. I. Estimation of individual crossbreeding effects on milk production and reproductive traits and on cow live weight

A study was carried out from 1992 to 1996 to compare the resistance to naturally acquired gastro intestinal (GI) nematode parasite infections (predominantly Haemonchus contortus) of Galla and Small East African goats in the sub humid coastal region of Kenya. A total of 204 Galla and 349 Small Eas...


Baker, R.L.Audho, James O.Aduda, Eric O.Thorpe, W.R.[Genetic resistance to gastro-intestinal nematode parasites in Galla and Small East African goats in the sub-humid tropics]Genetic resistance to gastro-intestinal nematode parasites in Galla and Small East African goats in the sub-humid tropics

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