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Birth (BW), weaning (WW) and yearling weight (YW) data of Boran cattle from Abernossa ranch of the Ministry of Agriculture of Ethiopia were analysed to estimate genetic parameters due to maternal and direct effects. In the univariate analysis, six different models ranging from the simple animal m...


Haile-Mariam, M.Kassa-Mersha, H.[Estimates of direct and maternal (co) variance components of growth traits in Boran cattle]Estimates of direct and maternal (co) variance components of growth traits in Boran cattle

Factors affecting reproductive performance in Boran cattle were investigated. Twenty-four years of data from a Boran cattle breeding and improvement ranch in the Rift Valley of Ethiopia were analysed to examine genetic and environmental influence on age at first calving (AFC) and calving interval...


Haile-Mariam, M.Kassa-Mersha, H.[Genetic and environmental effects on age at first calving and calving interval of naturally bred Boran(zebu) cows in Ethiopia]Genetic and environmental effects on age at first calving and calving interval of naturally bred Boran(zebu) cows in Ethiopia

Data collected on number of services per conception (NSC), age at first calving, (AFC), calving interval and calf pre-weaning mortality rate of Boran cattle and their Friesian crosses were evaluated. The NSC was 1.81, 1.61 and 1.69 for Boran, F1 Boran-Friesian and three-quarter Friesian heifers r...


Haile-Mariam, M.Banjaw, K.Gebre-Meskel, T.Ketema, H.[Productivity of Boran cattle and their Friesian crosses at Abernossa ranch, rift valley of Ethiopia. I. Reproductive performance and pre-weaning mortality]Productivity of Boran cattle and their Friesian crosses at Abernossa ranch, rift valley of Ethiopia. I. Reproductive performance and pre-weaning mortality

Birth (4,197) and weaning (2,441) weight data on Boran, F1 Boran Friesian and three quarter Friesian calves as well as adjusted one-year (390), 2 year (177) and 3-year (364) weights on Boran cattle were analysed to estimate the influence of genetic and environmental factors. Boran, F1 and three q...


Banjaw, K.Haile-Mariam, M.[Productivity of Boran cattle and their Friesian crosses at Abernossa ranch, rift valley of Ethiopia. II. Growth performance]Productivity of Boran cattle and their Friesian crosses at Abernossa ranch, rift valley of Ethiopia. II. Growth performance

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