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Lukuyu, Margaret N.Gibson, John P.Savage, D.B.Rao, E.J.O.Ndiwa, Nicholas N.Duncan, Alan J.[Farmers’ perceptions of dairy cattle breeds, breeding and feeding strategies: A case of smallholder dairy farmers in western Kenya]Farmers’ perceptions of dairy cattle breeds, breeding and feeding strategies: A case of smallholder dairy farmers in western Kenya

We present use of SNP technologies to obtain for the first time, rapid, large-scale, in situ estimates of performance of crossbred cows in smallholder herds. Compared to historical approaches, our approach allowed optimum crossbreed choices to be determined more rapidly and without question about...


Ojango, Julie M.K.Marete, A.Mujibi, F.D.N.Rao, E.J.O.Poole, Elizabeth J.Rege, J.E.O.Gondro, C.Weerasinghe, W.M.S.P.Gibson, John P.Okeyo Mwai, Ally[A novel use of high density SNP assays to optimize choice of different crossbred dairy cattle genotypes in smallholder systems in East Africa]A novel use of high density SNP assays to optimize choice of different crossbred dairy cattle genotypes in smallholder systems in East Africa
Aliloo, H.Mrode, Raphael A.Okeyo Mwai, AllyGibson, John P.[Signatures of selection in admixed dairy cattle of Kenya]Signatures of selection in admixed dairy cattle of Kenya

Cost-effective high-density (HD) genotypes of livestock species can be obtained by genotyping a proportion of the population using a HD panel and the remainder using a cheaper low-density panel, and then imputing the missing genotypes that are not directly assayed in the low-density panel. The ef...


Aliloo, H.Mrode, Raphael A.Okeyo Mwai, AllyNi, G.Goddard, M.E.Gibson, John P.[The feasibility of using low-density marker panels for genotype imputation and genomic prediction of crossbred dairy cattle of East Africa]The feasibility of using low-density marker panels for genotype imputation and genomic prediction of crossbred dairy cattle of East Africa

Background:Smallholder dairy farming in much of the developing world is based on the use of crossbred cows that combine local adaptation traits of indigenous breeds with high milk yield potential of exotic dairy breeds. Pedigree recording is rare in such systems which means that it is impossible ...


Strucken, E.M.Al-Mamun, H.A.Esquivelzeta-Rabell, C.Gondro, C.Okeyo Mwai, AllyGibson, John P.[Genetic tests for estimating dairy breed proportion and parentage assignment in East African crossbred cattle]Genetic tests for estimating dairy breed proportion and parentage assignment in East African crossbred cattle

Gibson, John P.Rege, J.E.O.Okeyo Mwai, AllyOjango, Julie M.K.[Overview of the Dairy Genetics East Africa (DGEA) project]Overview of the Dairy Genetics East Africa (DGEA) project
Ojango, Julie M.K.Mrode, Raphael A.Rege, J.E.O.Mujibi, D.Strucken, E.M.Gibson, John P.Okeyo Mwai, Ally[Genetic evaluation of test-day milk yields from smallholder dairy production systems in Kenya using genomic relationships]Genetic evaluation of test-day milk yields from smallholder dairy production systems in Kenya using genomic relationships

Due to the absence of accurate pedigree information, it has not been possible to implement genetic evaluations for crossbred cattle in African small-holder systems. Genomic selection techniques that do not rely on pedigree information could, therefore, be a useful alternative. The objective of th...


Brown, A.Ojango, Julie M.K.Gibson, John P.Coffey, M.Okeyo Mwai, AllyMrode, Raphael A.[Short communication: Genomic selection in a crossbred cattle population using data from the Dairy Genetics East Africa Project]Short communication: Genomic selection in a crossbred cattle population using data from the Dairy Genetics East Africa Project

Mrode, Raphael A.Aliloo, H.Chinyere, E.Ojango, Julie M.K.Gibson, John P.Okeyo Mwai, Ally[The application of several genomic models for the analysis of small holder dairy cattle data]The application of several genomic models for the analysis of small holder dairy cattle data

Reproductive performance and disease data were recorded for 2 years on 1,824 dairy cows in smallholder farms using participatory approaches and onfarm recording. Most animals experienced one service to conception. Calving intervals were long, ranging between 261 and 761 days, with an average of 4...


Mujibi, F.D.N.Ojango, Julie M.K.Rao, E.J.O.Karanja, T.Kihara, AbsolomonMarete, A.Baltenweck, IsabellePoole, Elizabeth J.Rege, J.E.O.Gondro, C.Weerasinghe, W.M.S.P.Gibson, John P.Okeyo Mwai, Ally[Use of high density SNP genotypes to determine the breed composition of cross bred dairy cattle in smallholder farms: Assessment of reproductive and health performance]Use of high density SNP genotypes to determine the breed composition of cross bred dairy cattle in smallholder farms: Assessment of reproductive and health performance

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