J. Anim Sci.
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J. Anim Sci. 1975. 40:648-654.
© 1975 American Society of Animal Science
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Unextracted Cottonseed in Diets for Monogastric Animals. II. The Effect of Boiling and Oven vs Sun Drying Following Pretreatment with a Ferrous Sulfate Solution

A. J. Clawson1, J. H. Maner2, G. Gomez2, Z. Flores3 and J. Buitrago4

Centro International de Agricultura Tropicaly Instituto Colombiano Agropecuario, Cali, Colombia

Abstract

Rats fed a corn base diet supplemented with dehulled cottonseed kernels which were boiled in a ferrous sulfate solution for 30 min gained as rapidly and required no more feed per unit of gain than those fed a corn-soybean meal diet. Boiling cottonseed kernels in the absence of ferrous sulfate greatly improved its nutritive value, however, boiling for 1 hr did not improve the cottonseed as much as mixing it with a cold (17 C) ferrous sulfate solution followed by oven drying at 70 C. Sun drying of either cottonseed meats or whole cottonseed (pretreated in a ferrous sulfate solution) was equal to oven drying in promoting rat growth. Similar results were obtained when these principles were applied to cottonseed meats used in pig diets; i.e., pigs fed diets containing cottonseed meats pretreated with ferrous sulfate solution followed by either sun or oven drying performed as well as those fed the corn-soybean meal control diet.

Footnotes

1 Visiting scientist with CIAT on leave from North Carolina State University at Raleigh.

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

3 Present address: Universidad Boliviana, Gabriel Rene Moreno, Santa Cruz, Bolivia.

4 Instituto Colombiana Agropecuario, Palmira, Colombia.






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Copyright © 1975 by the American Society of Animal Science.