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Journal of Animal Science, Vol 71, Issue 11 3011-3019, Copyright © 1993 by American Society of Animal Science

JOURNAL ARTICLE

Effects of adding medium-chain triglycerides to sow diets during late gestation and early lactation on litter performance

M. J. Azain
Animal and Dairy Science Department, University of Georgia, Athens 30602.

This experiment was conducted to determine whether feeding medium-chain triglycerides (MCT) to sows during late gestation and early lactation would improve neonatal pig survival. Beginning on d 91 of gestation and continuing through d 7 of lactation, sows were fed isoenergetic (7,000 kcal of ME/d) and isonitrogenous (278 g of CP/d) amounts of either control (19% starch, 2% soybean oil), long-chain triglycerides (LCT, soybean oil, 12%), or MCT (10% MCT, 2% soybean oil) diets. Sows (n = 18, 19, and 17, respectively) were induced to farrow on d 112 of gestation. Litters were weighed at birth, before suckling, and on d 1, 3, 7, and 21 of lactation. There was no effect of treatment on average pig weight at any time and no difference in the number of live pigs at birth. Beginning on d 3 (P < .05) and continuing through weaning (d 21, P < .02) survival was improved in litters from sows fed MCT relative to litters from sows fed the control diet. Overall survival rates were 80, 81, and 90% in control, LCT, and MCT groups, respectively. The greatest improvement in survival was observed in pigs weighing < 900 g at birth. Survival of pigs in this weight range was 32, 53, and 68% in control, LCT, and MCT treatments, respectively. Although feeding MCT resulted in an increase in content of medium-chain fatty acids in milk, these accounted for < 5% of the fatty acids in milk and likely cannot account for the improved survival rate.(ABSTRACT TRUNCATED AT 250 WORDS)


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Copyright © 1993 by the American Society of Animal Science.