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Organic Acid — Preserved High Moisture Corn for Swine¹

Purdue University², West Lafayette, Indiana 47907

Abstract

Two experiments utilizing 240 pigs were conducted to investigate the feeding value of organic acid preserved high moisture corn in free choice or complete mixed rations. Corn (27% moisture) was preserved by the addition of propionic acid or a propionic-acetate acid mixture (80:20) or by drying. A fortified soybean meal and a fortified soybean meal-meat meal-alfalfa meal supplement were compared in the free choice experiment.

Rate of gain was similar for all treatments within each experiment. When fed free choice, pigs fed the acid treated high moisture corn gained less efficiently than those fed dry corn. However, less supplement per unit of gain was consumed by pigs receiving acid treated high moisture corn than dry corn and by pigs receiving the fortified soybean meal supplement than the fortified soybean meal-meat meal-alfalfa meal supplement. Differences in feed efficiency were eliminated by feeding the diets in ground, mixed complete form. Organic acid treated high moisture corn was equivalent in feeding value to dry corn on an equal moisture basis when adequate intake of a properly fortified supplement was assured.

¹ Journal Paper No. 5706, Purdue University Agricultural Experiment Station.

² Department of Animal Sciences.