J. Anim Sci.
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J. Anim Sci. 1980. 51:352-360.
© 1980 American Society of Animal Science
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Effects of Level and Source of Supplemental Fat in the Lactation Diet of Sows on the Performance of Pigs from Birth to Market Weight1

T. S. Stahly, G. L. Cromwell and W. S. Simpson

University of Kentucky, Lexington 40546

Abstract

In three trials, 102 sows were allowed to consume ad libitum a corn-soybean meal basal diet containing 10% starch or 10% of a supplemental fat source possessing a high concentration (>70%) of either oleic or linoleic acid from parturition through a 21-day lactation. The addition of fat to the lactation diet of the sow increased (P<.05) the sow's daily metabolizable energy intake and milk fat content but did not influence the growth rate or survival of pigs from birth to weaning. From weaning to 49 days of age, pigs that had nursed sows fed supplemental fat gained slower (P<.05), consumed less (P<.01) feed and tended to utilize feed less efficiently than those pigs which had nursed sows fed starch. The initial growth retardation observed in pigs weaned from sows fed fat-supplemented diets was followed by a period of compensatory growth, resulting in the overall growth rate (weaning to market weight) and carcass backfat thickness of pigs from fat-supplemented dams being slightly, but not significantly, greater than the corresponding traits of pigs from dams fed starch. The fatty acid composition of sow milk and pig adipose tissue at weaning reflected that of the fatty acid profile of the sow's diet. However, the dietary fat source did not influence the growth rate or survival of pigs from birth to weaning or from weaning to market weight.

Footnotes

1 Journal paper 79-5-135 of the Univ. of Kentucky Agr. Exp. Sta., Dept. of Anim. Sci.






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Copyright © 1980 by the American Society of Animal Science.