HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Wadsworth, J. C. Search for Related Content PubMed Articles by Wadsworth, J. C.

Effect of Feeding Safflower Oil on the Composition of Absorbed Fatty Acid in Grazing Cows

Dairy Research Foundation, University of Sydney, University Farms, Camden, New South Wales 2570, Australia

ABSTRACT

Two lactating cows were fed a single, large dose of safflower oil. Its effect on the fatty acid composition of triglyceride and phospholipid in lymph from the thoracic duct was examined. The proportion of the fatty acids designated 18:1, 18:2, 18:3, 19:0 and 21:0 increased after oil-feeding and there was a compensating decrease in the proportion of most of the other fatty acids. The hourly output of most of the fatty acids in lymph triglyceride did not change after oil-feeding, whereas, the output of 18:1, 18:2, 18:3, 19:0 and 21:0 increased three- to ten-fold. Evidence is presented that the fatty acids identified from gas chromatography as 19:0, 18:3 and 21:0 contained significant proportions, respectively, of 18:1 having the double bond near the methyl end of the carbon chain, cis, trans conjugated 18:2 and trans-trans conjugated 18:2.

The effect of oil-feeding on the fatty acid composition of phospholipid in lymph from one of the cows was examined. The proportion of 18:0 and 18:3 decreased and that of 18:2 increased following oil-feeding. These changes were not as marked as those observed for triglyceride.