J. Anim Sci.
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J. Anim Sci. 1984. 58:346-350.
© 1984 American Society of Animal Science
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Effects of Selenium on Performance, Serum Selenium Concentration and Glutathione Peroxidase Activity in Pigs1

R. S. Adkins2 and R. C. Ewan

Iowa Agricultural and Home Economics Experiment Station3, Ames 50011

Abstract

Pigs from sows fed a diet deficient in Se and low in vitamin E were fed a Torula yeast diet supplemented with 100 IU dl-{alpha}-tocopheryl acetate/kg of diet. Dietary treatments were levels of supplemental Se of 0, .025, .050, .075 or .100 ppm. Some death loss occurred in pigs receiving no supplemental Se at approximately 5 wk of age. Autopsy revealed liver and heart lesions typical of vitamin E-Se deficiency. Selenium supplement had no significant effect on average daily gain, feed intake or gain to feed ratio for the 4-wk experiment. Selenium status of pigs was determined by serum Se concentration and serum glutathione peroxidase (GSH-Px) activity. Serum Se increased linearly (P<.01) with increasing supplemental Se. Serum GSH-Px activity increased linearly (P<.01) and quadratically (P<.05) with increasing supplemental Se. With time, the level of serum Se and GSH-Px activity decreased in unsupplemental pigs, but increased in pigs fed diets supplemented with Se and resulted in significant interactions (P<.01) between dietary Se level and time on experiment. The correlation between serum Se concentration and GSH-Px activity was .81 (P<.01).

Footnotes

1 Journal Paper No. J-10853 of the Iowa Agr. and Home Econ. Exp. Sta., Ames. Project No. 2338.

2 Present address: International Nutrition, Inc., 6664 "L" St., Omaha, NE 68117.

3 Dept. of Anim. Sci.






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Copyright © 1984 by the American Society of Animal Science.