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Influence fo Aged Corn and Supplemental Vitamin A on Growing-Finishing Swine¹

Purdue University, Lafayette, Indiana²

Abstract

Two experiments were conducted to evaluate aged corn and vitamin A supplementation for growing-finishing swine. Experiments 1 and 2 were conducted in the summer and winter months, respectively. Age of the corn showed no effect on average daily gain and serum vitamin A values. Liver vitamin A stores were higher in pigs receiving the new corn when compared with pigs receiving corn stored for 4 or 8 years. The addition of vitamin A increased serum and liver vitamin A levels. Average daily gain was increased only in groups fed vitamin A in drylot during the summer months. Pigs fed on pasture had higher serum and liver vitamin A values.

¹ The corn used in this study was supplied by H. D. Godfrey, Executive Vice President of the Commodity Grant Corporation, U.S.D.A., Washington, D. C. Contract No. GR(X)-5438

² Journal Paper No. 2574, Purdue University Agricultural Experiment Station.