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American Journal of Clinical Nutrition, Vol 59, 1317-1324, Copyright © 1994 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Plasma and tissue lipids of piglets fed formula containing saturated fatty acids from medium-chain triglycerides with or without fish oil

KM Wall, D Diersen-Schade and SM Innis
University of British Columbia, Department of Paediatrics, Vancouver, Canada.

Addition of fish oil (FO) with carbon chain 20 and 22 (long-chain polyunsaturated fatty acids; LCPs) n-3 fatty acids to formula has been considered as a method to provide 22:6n-3 to preterm infants. These studies determined the effects of including 0.73% n-3 LCPs from FO in formula containing saturated fatty acids as medium-chain triglyceride (MCT) oil on plasma and organ triglyceride (TG), phospholipid (PL), and cholesterol ester (CE) contents and compositions in piglets. Reference piglets were fed their own mother's milk. Piglets fed the formula with FO had significantly lower liver and kidney, but not plasma, TG concentrations; lower liver PL 20:4n-6; and higher plasma, liver, and kidney TG, PL, and CEn-3 LCPs than piglets fed the formula without FO. The increase in liver and kidney lipid n-3 LCPs and the decrease in kidney lipid content shows that inclusion of FO in formula with a high content of MCTs and 18:2n-6 does not promote tissue lipid metabolism similar to natural milk feeding. Piglets fed formula with FO had similar brain 20:4n-6 and 20:5n-3 but higher 22:6n-3 than did piglets fed sow milk. Diet-related differences in plasma and red blood cell PL were not reliable predictors of differences in brain LCP.


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S. M Innis
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Addition of Triglycerides with Arachidonic Acid or Docosahexaenoic Acid to Infant Formula Has Tissue- and Lipid Class-Specific Effects on Fatty Acids and Hepatic Desaturase Activities in Formula-Fed Piglets
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Copyright © 1994 by The American Society for Nutrition