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Journal of Nutrition Vol. 76 No. 2 February 1962, pp. 183-186
Copyright © 1962 by American Society for Nutrition
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Effect of Lime Treatment of Corn on the Availability of Niacin for Cats1 ,2

J. E. Braham, A. Villarreal and R. Bressani

Institute of Nutrition of Central America and Panama (INCAP), Guatemala, Central America

The availability of niacin in corn and in lime-treated corn and the utilization of tryptophan as a source of niacin have been studied in cats. Urinary N-methyl nicotinamide and nitrogen balance were measured in cats fed raw corn or lime-treated corn diets supplemented with either tryptophan or niacin or both. Results indicate that, under the experimental conditions, the cat cannot convert tryptophan into niacin and that this species is able to utilize the niacin from corn and lime-treated corn to an equal extent.

1 This investigation was supported by grant-in-aid from the Williams Waterman Fund.

2 INCAP Publication I-223.

Manuscript received 29 September 1961.




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