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Influence of Fasting on Body Composition and Tissue Cholesterol Levels in Swine

California State Polytechnic College, Pomona and H. J. Heinz Co., Pittsburgh, Pa.

Abstract

Boars, gilts and barrows fasted for 24 and 48 hr. had significantly elevated serum cholesterol levels. The fasted animals had significantly lower dressing percentages which appeared to be due to a lower carcass water content. Boars were found to have significantly lower serum cholesterol levels, bodyweight gain, dressing percent and shorter carcass length compared with the gilts or barrows. Backfat, bodyweight gain and total hepatic cholesterol levels were significantly increased in the barrows as compared with the boars or gilts. Fasted boars and barrows had total hepatic cholesterol levels which were higher than the non-fasted animals but this effect was not noted in the gilts.

¹ Animal Science Department, California State Polytechnic College.

² Research Assistant, Animal Science Department, California State Polytechnic College.

³ Nutritional Research Laboratory, H. J. Heinz Co., Pittsburgh, Pa.

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