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The predicted performance of nine crossbreeding strategies for milk production and reproductive traits and cow live weights (LW) were compared. The strategies were selected because of their superiority to many others. The data were from crosses of Ayrshire (A), Brown Swiss (B), Friesian (F) and S...


Kahi, A.K.Nitter, G.Thorpe, W.R.Gall, C.F.[Crossbreeding for dairy production in the lowland tropics of Kenya. II. Prediction of performance of alternative crossbreeding strategies]Crossbreeding for dairy production in the lowland tropics of Kenya. II. Prediction of performance of alternative crossbreeding strategies

A total of 1443 records were used to estimate individual and maternal additive genetic breed and heterotic effects for preweaning growth and survival traits of crosses of Ayrshire (A), Brown Swiss (B), and Sahiwal (S) in a dairy herd in the lowland coastal tropics of Kenya. Individual and matern...


Kahi, A.K.Mackinnon, M.J.Thorpe, W.R.Baker, R.L.Njubi, D.[Estimation of individual and maternal additive genetic and heterotic effects for preweaning traits of crosses of Ayrshire, Brown Swiss and Sahiwal cattle in the lowland tropics of Kenya]Estimation of individual and maternal additive genetic and heterotic effects for preweaning traits of crosses of Ayrshire, Brown Swiss and Sahiwal cattle in the lowland tropics of Kenya

Crossbreeding parameters for milk production and reproductive traits and for cow live weight (LW) of crosses of Ayrshire (A), Brown Swiss (B), Friesian (F) and Sahiwal (S) cattle were estimated using data from a dairy herd in the lowland coastal tropics of Kenya. An individual animal model was fi...


Kahi, A.K.Thorpe, W.R.Nitter, G.Baker, R.L.[Crossbreeding for dairy production in the lowland tropics of Kenya. I. Estimation of individual crossbreeding effects on milk production and reproductive traits and on cow live weight]Crossbreeding for dairy production in the lowland tropics of Kenya. I. Estimation of individual crossbreeding effects on milk production and reproductive traits and on cow live weight

Data on accumulated life performance of crosses of Ayrshire (A), Brown Swiss (B), Friesian (F) and Sahiwal (S) cattle collected over a 21- years period from a dairy ranch in the lowland tropics of Kenya were analysed to estimate additive and non-additive genetic effects of economic traits. These ...


Kahi, A.K.Thorpe, W.R.Nitter, G.Arendonk, Johan A.M. vanGall, C.F.[Economic evaluation of crossbreeding for dairy production in a pasture based production system in Kenya]Economic evaluation of crossbreeding for dairy production in a pasture based production system in Kenya

An individual animal model was fitted to data from a crossbred herd in the lowland coastal tropics of Kenya to estimated breed cross means for a total of 25 genotypes having different proportions of Ayrshire (A), Brown Swiss (B), Friesian (F) and Sahiwal (S) genes. These means were then regressed...


Kahi, A.K.Thorpe, W.R.[Estimates of crossbreeding parameters for defining optimal crossbreeding systems for the coastal lowland tropics]Estimates of crossbreeding parameters for defining optimal crossbreeding systems for the coastal lowland tropics

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