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The effects of non-genetic factors on responses to gastrointestinal nematode infections were examined in artificially infected indigenous Horro and Menz lambs in the central highlands of Ethiopia. The experiment involved lambs of two sexes, infection and monitoring regimens (3 levels), dam parity...


Haile, AynalemTibbo, MarkosBaker, R.L.Rege, J.E.O.[Effects of non-genetic factors on responses to gastro-intestinal nematode infections in Ethiopian sheep]Effects of non-genetic factors on responses to gastro-intestinal nematode infections in Ethiopian sheep

A survey was conducted by way of personal interviews with 562 respondents comprising 459 farmers and 103 butchers/traders in selected districts in the central and western parts of Kenya, consisting of three predominantly smallholder and four predominantly pastoral/extensive districts. The study a...


Kosgey, I.S.Rowlands, G.J.Arendonk, Johan A.M. vanBaker, R.L.[Small ruminant production in smallholder and pastoral/extensive farming systems in Kenya]Small ruminant production in smallholder and pastoral/extensive farming systems in Kenya

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...


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

A genome-wide scan was performed to detect quantitative trait loci (QTL) for resistance to the gastrointestinal nematode Haemonchus contortus in a double backcross population of Red Maasai and Dorper sheep. The mapping population comprised six sire families, with 1026 lambs in total. The lambs we...


Marshall, KarenMugambi, J.M.M.Nagda, S.M.Sonstegard, T.S.Tassell, C.P. vanBaker, R.L.Gibson, John P.[Quantitative trait loci for resistance to Haemonchus contortus artificial challenge in Red Maasai and Dorper sheep of East Africa]Quantitative trait loci for resistance to Haemonchus contortus artificial challenge in Red Maasai and Dorper sheep of East Africa

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