FATTY ACID COMPOSITION OF PORCINE DEPOT FAT AS RELATED TO THE EFFECT OF SUPPLEMENTAL DIETARY COPPER ON THE SPECIFIC ACTIVITIES OF FATTY ACYL DESATURASE SYSTEMS
- 1 March 1974
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Animal Science
- Vol. 54 (1) , 23-28
- https://doi.org/10.4141/cjas74-004
Abstract
Copper supplementation of a swine diet (barley-wheat-soybean meal) at a level of 250 ppm was associated with improved average daily gain, reduction in the melting point of the depot fat, increase in liver copper, decreased proportions of stearic and palmitic acids and concomitant increases in proportion of the medium-chain myristic acid as well as those of the major long-chain unsaturated fatty acids in the depot fat, and increases in the capacities of hepatic and adipose microsomes to desaturate 1-14C-oleate (in the presence of coenzyme A, ATP, Mg2+) and 1-14C-palmitoyl-CoA. There were neither sex differences nor copper × sex interactions. It is suggested that supplemental dietary copper enhances the specific activities of the fatty acyl desaturase systems, and that this enhancement contributes to the observed changes in fatty acid composition of the depot fat.This publication has 1 reference indexed in Scilit:
- SUPPLEMENTAL DIETARY COPPER AND THE DESATURATION OF 1-14C-STEAROYL-COENZYME A BY PORCINE HEPATIC AND ADIPOSE MICROSOMESCanadian Journal of Animal Science, 1973