J. Anim Sci.
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J. Anim Sci. 1978. 46:1009-1017.
© 1978 American Society of Animal Science
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Effect of Sow's Dietary Energy Source on Sow's Milk and Piglet Carcass Composition1

R. W. Seerley, F. M. Griffin and H. C. McCampbell

University of Georgia2, Athens 30602

Abstract

On day 104 after mating, Yorkshire sows were allotted to dietary treatment and fed 2 kg per head daily of fortified corn, oat and soybean meal diet with supplemental energy provided by either corn starch or animal fat in isocaloric amounts. Pigs were fed or fasted to compare the starch vs lipid in sow's diet on pig body composition.

Colostrum and milk from sows fed animal fat had higher percentages of total lipids (P<01) and oleic acid (P<.05), but lower percentages of palmitoleic and linoleic acids during the first 6 days after parturition than milk from sows fed corn starch. Colostrum contained more crude protein, stearic and linoleic acids and less (P<.05) total lipids and palmitoleic acid than milk samples at 3 and 6 days.

The only difference (P<.05) in carcass composition of fed and fasted pigs due to dietary treatment was that pigs in corn starch-fed groups at 3 days had more total lipids than animal fat-fed pigs while animal fat-fasted pigs had more linoleic acid than corn starch-fasted pigs.

The calculated estimates of lipids lost during fasting were 33 m 8% at 0 to 3 days and 55 vs 29% at 3 to 6 days for corn starch and animal fat treatment pigs, respectively. Utilization of body lipids for energy was relatively low in the animal fat-fed group.

Footnotes

1 The research was supported partially by Agricultural Research Service, USD A under cooperative agreement 12-14-1001-236.

2 Department of Animal and Dairy Science.






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