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Gastrointestinal (GI) parasitic infection is the main health constraint for small ruminant production, causing loss of weight and/or death. Red Maasai sheep have adapted to a tropical environment where extreme parasite exposure is a constant, especially with highly pathogenic Haemonchus contortus...


Benavides, M.V.Sonstegard, T.S.Kemp, Stephen J.Mugambi, J.M.M.Gibson, John P.Baker, R.L.Hanotte, Olivier H.Marshall, KarenTassell, C. van[Identification of novel loci associated with gastrointestinal parasite resistance in a red Maasai x Dorper backcross population]Identification of novel loci associated with gastrointestinal parasite resistance in a red Maasai x Dorper backcross population

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

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...


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 sheep. I. Genetic parameters of testicular measurements in ram lambs and relationship with age at puberty in ewe lambs]Reproductive characteristics of Ethiopian highland sheep. I. Genetic parameters of testicular measurements in ram lambs and relationship with age at puberty in ewe lambs

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