Effect of Milking Throughout Pregnancy on Milk Yield in the Succeeding Lactation

Abstract
In each of 2 cows, 2 quarters of the mammary glands were milked twice daily throughout the whole of their 2nd pregnancy. In the succeeding lactation these quarters gave only about 60% of the milk yield of the other two quarters which had a normal 10 week dry period. The results indicated that this effect is independent of nutrition or hormones.