Article
Genetic and environmental trends in a large commercial Jersey herd in the Central Rift Valley, Kenya.
Tropical animal health and production - 1 May 1997
Musani S K, Mayer M
Abstract excerpt
Records from a large commercial Jersey herd covering the period 1980 to 1993 were used to estimate genetic and environmental trends in production traits, fertility traits and age at first calving. The farm is located in the upper midland agroecological zone of the Central Rift Valley in Kenya. The estimated annual genetic trends were 0.8 kg (milk yield), 0.003% (butterfat per cent), 0.09 kg (butter fat yield), 0...
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