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Journal of Dairy Science Vol. 62 No. 6 978-981
© 1979 by American Dairy Science Association ®
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Effect of Prepartum Selenium-Vitamin E Injection on Time for Placenta to Pass and on Productive Functions

F. C. Gwazdauskas1, T. L. Bibb2, M. L. McGilliard1 and J. A. Lineweaver1

Virginia Polytechnic Institute and State University, Blacksburg 24061

ABSTRACT

The effect of a single injection of selenium-vitamin E containing 21.9 mg sodium selenite upon time for placenta to pass following calving and on subsequent reproductive and lactational performance was evaluated. Incidence of retained placenta was 11.4%. This amount of selenium-vitamin E did not affect the time for placenta to pass, did not reduce calving difficulty, nor did it increase number of heats prior to first breeding, decrease days open or services per conception, or increase milk the next lactation.

FOOTNOTES

2 Department of Dairy Science.

2 Department of Veterinary Science.






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Copyright © 1979 by the American Dairy Science Association ®.