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A study on a 300-cow herd with an average annual milk yield per cow of 10 000 litres is reported. An examination of postpartum ovarian activity found no direct relationship of age at insemination of heifers and milk yield with the incidence of reproductive disorders. The adverse effect of the...

Platen, M.; Lindemann, E.; Münnich, A.
Tierärztliche Umschau, 1995, 50, 1, pp 41-46