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A preliminary search for QTLs in a cattle F2 resource populations segregating for trypanotolerance has revealed three large candidate chromosomal regions (Bta02, Bta05, Bta07). In order to narrow down the position of the trypanotolerant QTLs, we are building comparative chromosomal maps between c...


Nilsson, P.H.Kang'a, S.Rottengatter, K.Suedbeck, U.Iraqui, F.Mwakaya, J.Mwangi, D.Womack, J.E.Goldammer, T.Schwerin, M.Bradley, D.Agaba, MorrisSugimoto, K.Gelhaus, A.Horstmann, R.Teale, A.J.Kemp, Stephen J.Hanotte, Olivier H.[Radiation hybrid maps of candidate trypanotolerance regions in cattle]Radiation hybrid maps of candidate trypanotolerance regions in cattle

We have sought to test the possibility of detecting regions of the genome under selection through effects on variation at linked neutral genetic markers. Particularly, we investigated three genomic regions identified by mapping in a cross-bred pedigree as harbouring QTL for trypanosomiasis tolera...


Park, S.D.E.Adomefa, K.Dao, B.Hanotte, Olivier H.Kemp, Stephen J.Sow, R.S.Teale, A.J.Bradley, D.G.[Application of population genetic analysis of linked, mapped microsatellites to the identification of loci under selection for disease resistance]Application of population genetic analysis of linked, mapped microsatellites to the identification of loci under selection for disease resistance

West African N'Dama cattle have developed a genetic capacity to survive, reproduce and remain productive under trypanosomosis risk. The cellular and molecular bases of this so-called trypanotolerance are not known, but the trait is manifested by the N'Dama's greater capacity to control parasitae...


Naessens, JanLeak, S.G.A.Kennedy, D.J.Kemp, Stephen J.Teale, A.J.[Responses of bovine chimaeras combining trypanosomosis resistant and susceptible genotypes to experimental infection with Trypanosoma congolense]Responses of bovine chimaeras combining trypanosomosis resistant and susceptible genotypes to experimental infection with Trypanosoma congolense

West African N'Dama cattle have developed a genetic capacity to survive, reproduce and remain productive under trypanosomosis risk. The cellular and molecular bases of this so-called trypanotolerance are not known, but the trait is manifested by the N'Dama's greater capacity to control parasitaem...


Naessens, JanLeak, S.G.A.Kennedy, D.J.Kemp, Stephen J.Teale, A.J.[Responses of bovine chimaeras combining trypanosomiasis resistant and susceptible genotypes to experimental infection with Trypanosoma congolense]Responses of bovine chimaeras combining trypanosomiasis resistant and susceptible genotypes to experimental infection with Trypanosoma congolense

Tsetse fly-transmitted trypanosomes (Trypanosoma spp.) cause 'sleeping sickness' in man and have a serious impact on livestock-based agriculture in large areas of Africa. Multigene control of variation in susceptibility to trypanosomiasis is known to occur in mice, where the C57BI/6 (B6) strain i...


Kemp, Stephen J.Iraqi, F.A.Darvasi, A.Soller, M.Teale, A.J.[Localisation of genes controlling resistance to trypanosomiasis in mice]Localisation of genes controlling resistance to trypanosomiasis in mice

Under most circumstances, certain breeds of domestic ruminants show a remarkable resistance to the effects of African trypanosomiasis: they can tolerate the presence of parasites while apparently controlling levels of parasitaemia and, crucially, not showing the the severe anaemia and production ...


Kemp, Stephen J.Teale, A.J.[Genetic basis of trypanotolerance in cattle and mice]Genetic basis of trypanotolerance in cattle and mice

A comparison of F2 and F6/7 inter-cross lines of mice, derived from CBA and SWR parental strains, has provided strong evidence for several previously undetected quantitative trait loci (QTL) for resistance to Heligmosomoides bakeri. Five QTL affecting average faecal egg counts and/or worm burdens...


Behnke, J.M.Menge, D.M.Nagda, S.M.Noyes, H.Iraqi, F.A.Kemp, Stephen J.Mugambi, R.J.M.Baker, R.L.Wakelin, D.Gibson, John P.[Quantitative trait loci for resistance to Heligmosomoides bakeri and associated immunological and pathological traits in mice: comparison of loci on chromosomes 5, 8 and 11 in F2 and F6/7 inter-cross lines of mice]Quantitative trait loci for resistance to Heligmosomoides bakeri and associated immunological and pathological traits in mice: comparison of loci on chromosomes 5, 8 and 11 in F2 and F6/7 inter-cross lines of mice

Tsetse fly-transmitted trypanosomes (Trypanosoma spp.) cause 'sleeping sickness' in man and have a serious impact on livestock-based agriculture in large areas of Africa. Multigene control of variation in susceptibility to trypanosomiasis is known to occur in mice, where the C57BI/6 (B6) strain i...


Kemp, Stephen J.Iraqi, F.A.Darvasi, A.Soller, M.Teale, A.J.[Localization of genes controlling resistance to trypanosomiasis in mice]Localization of genes controlling resistance to trypanosomiasis in mice

Some West African Bos taurus cattle breeds such as the N'Dama and a number of West African Shorthorns are resistant to tsetse fly-transmitted trypanosomosis. The trait is termed trypanotolerance, for which changes in packed red cell volume percent (PCV) and growth rate following infection are ge...


Waaij, E.H. van derHanotte, Olivier H.Arendonk, Johan A.M. vanKemp, Stephen J.Kennedy, D.Gibson, John P.Teale, A.J.[Population parameters for traits defining trypanotolerance in an F2 cross of N'Dama and Boran cattle]Population parameters for traits defining trypanotolerance in an F2 cross of N'Dama and Boran cattle

A two species comparative genome scanning approach has been taken to mapping, and eventually identifying, genes at quantitative trait loci (QTL) influencing resistance to trypanosomosis due to infection with Trypanosoma congolense. Using two large murine F2 and two F6 advanced intercross populati...


Teale, A.J.Agaba, MorrisClapcott, S.J.Gelhaus, A.Haley, C.Psifidis, A.Horstmann, R.Iraqui, F.Kemp, Stephen J.Nilsson, P.Schwerin, M.Sekikawa, K.Soller, M.Sugimoto, Y.Womack, J.[Resistance to trypanosomosis: Of markers, genes and mechanisms]Resistance to trypanosomosis: Of markers, genes and mechanisms

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