Supplemental Dietary Fat for Peripartal Sows: a Review

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Abstract
Insufficient energy may contribute to the high mortality rate among piglets. Supplemental fat in the sow's diet during late gestation does not affect the piglets' body stores of carbohydrates at birth but increases slightly carcass fat stores. Supplemental dietary fat during late gestation and(or) lactation increases milk production and the fat concentration of colostrum and milk. This increase in colostral and milk fat increases the survival rate among the piglets if the herd survival rate is relatively low (less than 80%) and the sow consumes at least 1,000 g of fat before farrowing. The importance of continuing the fat supplementation after farrowing has not been established. The increased survival rate does not cause a decrease in the mean piglet weaning weight. Rather, the mean piglet weaning weight appears to increase if the dietary fat concentration is at least 8%. There are practical problems associated with the mixing and handling of high fat diets. Copyright © 1981. American Society of Animal Science . Copyright 1981 by American Society of Animal Science.

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