J. Anim Sci.
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J. Anim Sci. 1971. 33:791-796.
© 1971 American Society of Animal Science
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Performance of Rats and Swine Fed Colombian Floury-2, Colombian Opaque-2 or Normal Corn

J. H. Maner1, W. G. Pond2, J. T. Gallo3, A. Henao1, R. Portela3 and F. Linares4

Centro Internacional de Agricultura Tropical, Instituto Colombiano Agropecuario y Universidad del Valle, Cali, Colombia

Abstract

One experiment was completed with 56 weanling Duroc x Landrace x Yorkshire swine and two with weanling Sprague-Dawley rats to determine the nutritive value of Colombian floury-2 corn in comparison with that of Colombian opaque-2 and Colombian common corn. In both rats and swine Colombian floury-2 corn (both male and female) was inferior to opaque-2 corn and similar to common corn when daily gain and feed/gain were the criteria of response. In rats, the PER obtained with floury-2 corn was also inferior to that with opaque-2 corn and similar to that with common corn. The floury-2 x opaque-2 cross supported weight gain, feed/gain and PER midway between that supported by floury-2 or opaque-2 corn alone. A comparison of the amino acid requirements of the weanling pig with the amino acid content of the floury-2 corn indicates that lysine and tryptophan and possibly isoleucine and threonine are the limiting amino acids in Colombian floury-2 corn. Further work is needed to determine the identities and proper supplemental levels of amino acids needed to support optimum performance in animals fed Colombian floury-2 corn.

Footnotes

1 Centro Internacional de Agricultura Tropical, Apartado Aereo 67-13, Cali, Colombia.

2 Visiting scientist with CIAT on leave from Cornell University, Ithaca, New York.

3 Instituto Colombiano Agropecuriao, Palmira, Colombia.

4 Department of Pediatrics and Nutrition, Universidad del Valle, Cali, Colombia.






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Copyright © 1971 by the American Society of Animal Science.