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Moldy Corn in Diets of Swine

University of Guelph, Guelph, Ontario, Canada NIG 2W1

Abstract

Three trials were conducted to evaluate the effect of consumption of moldy corn on pig performance. In trial 1, four levels of zearalenone from moldy corn (0, 3, 6 and 9 ppm) were fed to 24 gilts (average weight 64 kg) for 42 days. Rate of gain, feed consumption and gain to feed ratio decreased with increasing dietary levels of moldy corn. There appeared to be some adaptation to the higher levels of moldy corn with time. The same dietary treatments fed in trial 1 were fed to 24 barrows and 24 gilts (initial weight 6.3 kg) in trial 2. In trial 3, the same levels of zearalenone fed in trials 1 and 2 were fed to 24 gilts, but a different sample of moldy corn was used. Increasing levels of moldy corn resulted in decreased rate of gain. Swelling and redness of the vulvae were observed in gilts fed diets containing 6 or 9 ppm zearalenone. Uterine weight increased with increasing levels of zearlenone in the diet, as did the thickness of the vaginal epithelium.

¹ Dept. of Anim. and Poul. Sci.

² Northern Regional Research Center, USDA, Peoria, IL.

³ Ontario Ministry of Agriculture and Food.

⁴ Dept. of Pathol.

⁵ This research was supported by the Ontario Ministry of Agriculture and Food and the Natural Sciences and Engineering Research Council, Canada.