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Journal of Dairy Science Vol. 57 No. 6 723-725
© 1974 by American Dairy Science Association ®
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Effect of Feeding Coumaphos on Feed Intake and Rate of Gain of Steers1

R. W. Miller and P. P. Long

Chemical and Biophysical Control Laboratory, Agricultural Environment Quality Institute, ARC, ARS, USDA, Beltsville, Maryland 20705

ABSTRACT

When four Holstein steers were fed a ration countaining 3 mg/kg body weight coumaphos for 135 days, blood cholinesterase activity was depressed markedly. However, differences in feed intake, feed conversation, and gain in body weight were not significant between these and four steers fed untreated ration.

FOOTNOTES

1 Mention of a pesticide or a proprietary product in this paper does not constitute a recommendation or an endorsement of this product by the USDA.






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Copyright © 1974 by the American Dairy Science Association ®.