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Autor: Rege, J.E.O.

An original data set of 31, 661 lactation records of Kenyan Friesian cows covering the period 1968 through 1987 was used to develop part-lactation extension factors for milk yield, and to estimate genetic parameters for production and reproductive traits. Effects of herds and year were significan...


Rege, J.E.O.[Genetic analysis of reproductive and productive performance of Friesian cattle in Kenya. I. Genetic and phenotypic parameters]Genetic analysis of reproductive and productive performance of Friesian cattle in Kenya. I. Genetic and phenotypic parameters
Autor: Rege, J.E.O.

The Kenya Livestock Recording Centre progeny testing data base covering the period 1968 through 1987 was used to estimate genetic and phenotypic trends in Friesian cattle for milk yield of all lactations, first lactation milk yield, age at first calving, and calving interval. Annual genetic and p...


Rege, J.E.O.[Genetic analysis of reproductive and productive performance of Friesian cattle in Kenya. II. Genetic and phenotypic trends]Genetic analysis of reproductive and productive performance of Friesian cattle in Kenya. II. Genetic and phenotypic trends

A study was conducted at the Asella Station in the Arsi Region of Ethiopia to investigate the dairy performance of indigenous purebred Arsi and Friesian X Arsi crosses under different pre-partum and post-partum supplementary feeding regimes. A total of 343 first-lactation animals were involved in...


Kurtu, M.Y.Tawah, C.L.Rege, J.E.O.Alemayehu, N.Shibre, M.[Lactation performance of purebred Arsi cows and Friesian X Arsi crosses under pre-partum and post-partum supplementary feeding regimes]Lactation performance of purebred Arsi cows and Friesian X Arsi crosses under pre-partum and post-partum supplementary feeding regimes

Individual and maternal additive genetic and heterotic effects were estimated for preweaning, reproductive, and lactation traits of the Sahiwal breed and its crosses with Bos taurus (Ayrshire and Friesian). The individual additive genetic breed effect influenced all cow traits except annual milk ...


Thorpe, W.R.Kang'ethe, P.Rege, J.E.O.Mosi, R.O.Mwandotto, B.A.J.Njuguna, P.[Crossbreeding Ayrshire, Friesian, and Sahiwal cattle for milk yield and preweaning traits of progeny in the semiarid tropics of Kenya]Crossbreeding Ayrshire, Friesian, and Sahiwal cattle for milk yield and preweaning traits of progeny in the semiarid tropics of Kenya

A study was conducted at the Asella Station in the Arsi Region of Ethiopia to investigate the dairy performance of purebred indigenous Arsi and Friesian x Arsi crosses under different pre- and post-partum supplementary feeding regimes. Lactational performance of both genotypes was not affected by...


Tawah, C.L.Mohammed-Kurtu, Y.Rege, J.E.O.Alemayehu, N.Shibre, M.[Lactation performance of purebred Arsi and Friesian X Arsi crosses under prepartum and postpartum supplementary feeding regimes in Ethiopia]Lactation performance of purebred Arsi and Friesian X Arsi crosses under prepartum and postpartum supplementary feeding regimes in Ethiopia

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