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Service period, calving interval, lactation period and their effect on milk yield in Sudanese dairy cattle



Service period, calving interval, lactation period and their effect on milk yield in Sudanese dairy cattle



J. Anim. Prod. U.A.R, 3: 1, 45-57



A study of 558 complete lactation records of 188 Sudanese cows showed the following averages: lactation length, 317 +or- 63 days; milk yield, 442 +or- 140 gal. ; calving interval, 416 +or- 73 days; service period, 129 +or- 73 days.

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