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Effects of Corn Selenium Content and Drying Temperature and of Supplemental Vitamin E on Growth, Liver Selenium and Blood Vitamin E Content of Chicks

Cornell University, Ithaca, New York 14850

Abstract

SELENIUM-VITAMIN E deficiency among growing pigs fed corn-soybean meal diets has been observed in commercial swine enterprizes in ,;ome areas of Midwestern and Eastern United States in recent years. These observations have provided the impetus for research related to selenium and vitamin E supplementation of diets for growing swine (Conrad et al., 1969; Wastell and Ewan, 1969; Ewan et al., 1969; Klein et al., 1970; Groce, et al., 1970). Kornegay (1971), Ullrey (1970) and Trapp et al. (1970) reviewed the vitamin E-selenium nutrition of swine and aspects of the field problem.

Areas of the U. S. where the syndrome has become a problem have low soil levels and, in turn, low plant levels of selenium (Kubota et al., 1967). It has been suggested that heatdrying of corn may reduce its vitamin E content and thereby increase the incidence of vitamin E-Se deficiency in pigs. Sharp, Young and Van Dreumel (1970) reported a decrease in vitamin E activity of corn or complete diet by heating, but the decrease was not associated with survival rate of pigs.

¹ Department of Animal Science.

² U.S. Plant, Soil and Nutrition Laboratory, U.S.D.A.

³ Department of Pathology, New York State Veterinary College.