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Journal of Dairy Science Vol. 78 No. 3 625-630
© 1995 by American Dairy Science Association ®
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Effect of Selenium Supplementation of Cows on Maternal Transfer of Selenium to Fetal and Newborn Calves

M. M. Abdelrahman 1 and R. L. Kincaid 1

1 Department of Animal Sciences, Washington State University, Pullman 99164-6320

A trial was conducted to determine the effect of maternal supplementation of Se on transfer of Se to the fetus during late gestation. Holstein cows were randomly assigned at dry-off to receive no Se or 3 mg/d of supplemental Se as selenite delivered via an intraruminal bolus. Supplementation significantly increased concentrations of Se in blood of dams at parturition. Similarly. calves of cows that were supplemented with Se had higher Se in blood and liver. Colostral concentrations of Se were increased by maternal Se supplementation; Se increased in the casein fraction. The Se concentrations in blood, plasma, and liver of calves were positively correlated with the Se concentrations in plasma of the dam at parturition. Concentrations of Se in colostrum and in calf liver also were closely correlated. Concentrations of Se in calf liver at d 42 were closely correlated with concentrations of Se in liver at birth. Maternal supplementation of Se increased Se reserves in the liver of the newborn and in colostrum. Carryover effects of Se supplementation of dams were evident in calves at 42 d of age.

Key Words: selenium • calves • blood • liver

Submitted on May 6, 1994
Accepted on October 7, 1994




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