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Journal of Dairy Science Vol. 75 No. 10 2726-2732
© 1992 by American Dairy Science Association ®
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Effects of Voltages on Cows over a Complete Lactation. 2. Health and Reproduction

R. C. Gorewit 1, D. J. Aneshansley 1, and L. R. Price 1

1 Department of Animal Science, Cornell University, Ithaca, NY 14853

For the effects of voltages on health and reproduction, 40 cows in second to fifth lactation were divided into four groups of 10. These included a control group that was not subjected to voltages and three treatment groups that were given either 1, 2, or 4 V at the water bowl. Cows in the treatment groups were exposed during the entire lactation to voltage whenever they drank. Voltages did not sufficiently affect milk yield. General health parameters studied were mastitis, hoof problems, and changes in body weight. Reproductive and calving parameters examined were days to first breeding, days open, services per conception, response to PGF2alpha, calving intervals, visible abortion, and calves born dead. Voltages did not significantly influence cow health or reproductive performance.

Key Words: cows • voltages • health • reproduction

Submitted on September 16, 1991
Accepted on June 15, 1992






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Copyright © 1992 by the American Dairy Science Association ®.