Efficacy of Supplemental Selenium in Reproductive Diets on Sow and Progeny Performance

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Abstract
Twenty-six crossbred gilts raised under confinement conditions were randomly allotted to one of three dietary treatments to determine the efficacy of selenium additions to sow diets over two reproductive cycles in preventing selenium deficiency in their progeny. The treatments were: (1) A fortified, low selenium corn-soybean meal diet (Control), (2) the same diet supplemented with 0.1 ppm of selenium as sodium selenite (Control + Se) and (3) a semi-purified diet devoid of supplemental vitamin E and selenium. Litter sizes of the Control and Control + Se sows were similar during parity I; in parity II the Control sows had smaller (P< .05) litters than the Control + Se group. Three sows fed the semi-purified diet farrowed in parity I while none farrowed in parity II. The three sows that farrowed were extremely weak at or shortly after parturition and had small litters. Upon necropsy these sows exhibited the selenium-vitamin E deficiency syndrome. During the second parity, three additional sows fed the semi-purified diet died during gestation. Copyright © 1974. American Society of Animal Science. Copyright 1974 by American Society of Animal Science.

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