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Six first cross (F1) Red Maasai X Dorper rams were mated to both Red Maasai (R) and Dorper (D) ewes to produce 1342 double backcross progeny (672 3/4 D/1/4 R and 670 3/4 R/1/4 D lambs born alive). These six double backcross resource families are being used to identify quantitative trait loci con...


Mugambi, J.M.M.Audho, James O.Baker, R.L.[Evaluation of the phenotypic performance of a Red Maasai and Dorper double backcross resource population: Natural pasture challenge with gastro-intestinal nematode parasites]Evaluation of the phenotypic performance of a Red Maasai and Dorper double backcross resource population: Natural pasture challenge with gastro-intestinal nematode parasites

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

Despite the large numbers and importance of adapted indigenous sheep and goats in the tropics, information on sustainable conventional breeding programmes for them is scarce and often unavailable. This paper reviews within-breed selection strategies for indigenous small ruminants in the tropics,...


Kosgey, I.S.Baker, R.L.Udo, H.M.J.Arendonk, Johan A.M. van[Successes and failures of small ruminant breeding programmes in the tropics: A review]Successes and failures of small ruminant breeding programmes in the tropics: A review

Six F1 Dorper (D) x Red Maasai (R) rams were mated to both D and R ewes to produce backcross lambs. These six double backcross resource families are being analysed to identify quantitative trait loci that may be controlling resistance to gastro-intestinal (GI) nematode parasites, mainly Haemonchu...


Mugambi, J.M.M.Audho, James O.Njomo, S.Baker, R.L.[Evaluation of the phenotypic performance of a Red Maasai and Dorper double backcross resource population: Indoor trickle challenge with Haemonchus contortus]Evaluation of the phenotypic performance of a Red Maasai and Dorper double backcross resource population: Indoor trickle challenge with Haemonchus contortus

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...


Haile, AynalemAnindo, D.O.Tembely, S.Mukasa-Mugerwa, E.Tibbo, MarkosYami, 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

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...


Kosgey, I.S.Arendonk, Johan A.M. vanBaker, 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

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