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Performance of Swine Fed Opaque-2 or Normal Corn Free-Choice^{1, 2,}

South Dakota State University, Brookings 57006

Abstract

Three experiments were conducted with 180 female growing pigs to evaluate opaque-2 corn in a free-choice feeding system. Pigs fed free-choice gained more efficiently and at an equal rate to pigs fed mixed diets.

When fed free-choice, more opaque-2 corn was consumed in experiments 1 and 3 and 47, 30 and 35% less supplement was consumed in experiments 1, 2 and 3, respectively, than when the free-choice diet was normal corn and supplement. Rates of gain were similar and feed/gain was less when pigs were fed opaque-2 corn. Consumption of a soybean meal supplement or a soybean meal-meat meal-alfalfa meal supplement was similar as were gains and feed/gain of pigs fed these supplements free-choice with opaque-2 or normal corn.

The data reported here indicate that opaque-2 corn is superior to normal corn when fed in a free-choice feeding system.

¹ Published with the approval of the Director of the South Dakota Agricultural Experiment Station as Publication No. 1131 of the Journal Series.

² Department of Animal Science.