The influences of age on lactation length and milk yield in Kenana and Butana cows
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Abdalla, E.A., Nasr, A.M., Khalafalla, A.M. and EL Shafie, S.A. 1990. The influences of age on lactation length and milk yield in Kenana and Butana cows. Khartoum, Sudan: Ministry of Animal Resources, Dept. Animal Production Research Administration. Sudan Journal of Animal Production 3(2): 93-100.
Permanent link to this item: http://hdl.handle.net/10568/66859
Milk yield performances in Kenana and Butana cows were examined to determine the influence of age on production. The mean milk yields for the Kenana and Butana herds were 2136 ± 168 and 1807 ± 592 kg produced in a mean lactation period of 283 ± 40 days and 283 ± 57 days respectively. In both herds the maximum lactation milk yield was attained in the third lactation. Kenana cows between 6½ - 7½ years of age and Butana cows between 5½ - 6½ years of age attained the maximum lactation milk yield.