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Prepartum Milking. IV. The Effect of Prepartum Milking on Milk Production and Length of Time Required to Reach Peak of Lactation

Animal Industries Department, Storrs Agricultural Experiment Station, University of Connecticut, Storrs

ABSTRACT

The practice of prepartum milking, unless it results in greater milk production or relief of mammary edema, is of little economic significance (9). Literature concerning the effect of this practice on mammary edema is contradictory. Several investigators (3, 7, 11, 14, 16) have indicated that prepartum milking relieved mammary edema, while other investigators (2, 4) found that the practice had little or no effect on mammary edema.

There are reports that prepartum milking may result in greater milk production by bringing the animal into full production sooner (12, 13). In an experiment involving 38 prepartum-milked Ayrshires and their controls, Ackerman and Hyatt (1) reported that the prepartum-milked cows exceeded their controls by 510 lb. of milk. The lactations, which were of 43 weeks duration, with twice-a-day milking, were corrected to maturity. In another study of prepartum-milked Ayrshires, Ackerman and his associates (2) found that prepartum-milked cows reached their peak of lactation somewhat later thau postpartum-milked cows.

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