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Journal of Nutrition Vol. 76 No. 4 April 1962, pp. 365-374
Copyright © 1962 by American Society for Nutrition
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Effects of Chronic Food Restriction in Swine1,2,

Doris Howes Calloway3, Russell Hilf4 and A. H. Munson5

Quartermaster Food and Container Institute for the Armed Forces, Quartermaster Research and Engineering Command, U. S. Army, Chicago, Illinois

Male swine were fed a mixed human diet ad libitum for 44 weeks. Paired animals were given the diet in amounts that allowed only 50% of the weight gain of the fully fed group. The back-fat thickness of the ad libitum group averaged 1.9 in. terminally and that of the restricted animals was 0.3 in. The restricted group showed slightly elevated levels of serum cholesterol, phospholipid and ketones and of hepatic 5'-nucleotidase activity. Vascular pathology was indicative of delayed aging in the underfed group but tumorigenesis was enhanced. There was no positive correlation within groups between relative fatness and any other measured characteristic.

1 This paper reports research undertaken at the Quartermaster Food and Container Institute for the Armed Forces, QM Research and Engineering Command, U. S. Army, and has been assigned no. 2137 in the series of papers approved for publication. The view or conclusions contained in this report are those of the authors. They are not to be construed as necessarily reflecting the view or indorsement of the Department of Defense.

2 Presented, in part, at the Annual Meeting of the American Institute of Nutrition, Atlantic City, New Jersey, 1959.

3 Present address: Stanford Research Institute, Menlo Park, California.

4 Present address: Squibb Institute for Medical Research, New Brunswick, New Jersey.

5 Present address: Major, USAF (VC) 2789th USAF Hospital, CMR, Box 252, Brookley AFB, Alabama.

Manuscript received 2 August 1961.




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