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Observations on the Nutrition of Rhesus Monkeys Receiving Highly Processed Rations¹

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Department of Biochemistry, University of Wisconsin, Madison

The 5-in-1 type of combat ration, which consists of a generous variety of processed foods, has been shown capable of maintaining a state of health in monkeys for periods of up to two years with minor vitamin supplementation. Folic acid and pyridoxine are required by this species in addition to the crystalline vitamins added during the manufacture of the ration. The folic acid inadequacy is largely a reflection of the high requirement of monkeys. The general significance of the pyridoxine deficiency precipitated in animals by highly processed rations is discussed.

The injection of antibiotics to assist in controlling secondary complications during times of deficiency has proved to be a useful innovation in nutritional studies employing monkeys.

This paper reports research undertaken in cooperation with the Quartermaster Food and Container Institute for the Armed Forces, and has been assigned number 442 in the series of papers approved for publication. The views or conclusions contained in this report are those of the authors. They are not to be construed as necessarily reflecting the views or indorsement of the Department of Defense.

Manuscript received 10 August 1953.