J. Anim Sci.
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J. Anim Sci. 1970. 30:923-930.
© 1970 American Society of Animal Science
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Effects of Dietary Copper Sulfate and Protein on the Fatty Acid Composition of Porcine Fat

J. I. Elliot1 and J. P. Bowland

The University of Alberta, Edmonton2,3,

Abstract

Sixty-four Hampshire x Yorkshire barrows and gilts were fed barley-fishmeal, barley-meat meal, barley-soybean meal or barley-rapeseed meal diets with or without 250 mg supplemental copper per kg diet. Daily feed intake averaged 2.5 kg and was not influenced by dietary protein source or supplemental copper. Pigs receiving the barley-fishmeal and barley-soybean meal diets gained more rapidly and required less feed per kilogram gain than those fed the barley-meat meal or barley-rapeseed meal diets. Rate of gain and feed conversion efficiency were not significantly influenced by supplemental copper.

In comparison with animals receiving the basal diets, copper supplementation of the fishmeal, meat meal and soybean meal-supplemented diets resulted in a significant increase in the proportion of UFA and a concomitant decrease in the proportions of SFA present in the backfat of pigs at 34, 45, 57, 68, 79 and 88 kg live weight. Copper supplementation of the barley-rapeseed meal diet did not result in similar changes.

Footnotes

1 Present address: Department of Animal Science, Macdonald College P.O., Quebec. Submitted in partial fulfillment of the requirements for a Ph.D. degree.

2 Department of Animal Science, Edmonton, Alberta, Canada.

3 Supported in part by grants from the National Research Council of Canada and from the Canadian Renderers Association, Inc. The senior author was the recipient of an N.R.C. studentship.






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Copyright © 1970 by the American Society of Animal Science.