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Influence of Diet on the Fatty Acid Composition of Swine Tissues^{1, 2,}

University of Georgia, Athens

Abstract

Three-week-old pigs were fed an EFA-deficient diet, a diet containing 10% beef tallow, or a diet containing 10% corn oil until slaughtered at weights of approximately 50 kg. Tissue samples were obtained from 15 different organs for fatty acid analyses.

Pigs fed the EFA-deficient diet showed bio-chemical changes in several body tissues. The alterations in fatty acid distribution which were found in liver, kidney, pancreas, spleen, heart, tongue, l. dorsi and semimembranosus muscles, were characterized by reduced levels of diene and tetraene fatty acids with corresponding increases in the monoene and triene fatty acids. The relationship of the acids in these tissues was reversed when either beef tallow or corn oil was added to the diet. Corn oil resulted in a greater effect on the fatty acid distribution in these tissues than did beef tallow. These data indicate that a wide range of body tissues exhibit a rather sensitive response to changes in the quantity and source of dietary lipids supplied to the pig.

¹ Journal Series Paper No. 10, University of Georgia, College of Agriculture Experiment Stations, College Station, Athens.

² Grateful acknowledgement is due A. M. Lynn, herdsman, for assistance in the care of the animals.

³ Present address: Ralston Purina Company, St. Louis, Missouri.