Composition Changes in Bovine Subcutaneous Lipid as Influenced by Dietary Fat

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Abstract
BIOPSY samples of subcutaneous fat, obtained at 28-day intervals throughout the feeding period of two trials, revealed that type and, to a lesser extent, the amount of fat fed the bovine was effective in altering the type of fatty acids deposited in the subcutaneous fat of the tailhead region. The depot fat of the animals on the control diet (in both experiments) became less saturated (P>.05) (3 to 5% change in major unsaturated fatty acids) with time on feed, and the safflower oil regimen of Experiment 1 caused this effect to be more pronounced. The animal fat diets of both experiments generally had the opposite effect in that the biopsy lipid fatty acids from these animals changed very little or became more saturated as compared to the control animals throughout the experimental feeding period. An evaluation of the serum lipid fatty acids of the animals in each trial of these experiments suggested that the carcass depot lipid fatty acid changes due to diet or period noted in these studies were in most instances a simple reflection of the change in the fatty acid composition of the serum free fatty acid and glyceride lipid fractions. Copyright © 1973. American Society of Animal Science. Copyright 1973 by American Society of Animal Science.

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