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Journal of Dairy Science Vol. 27 No. 7 545-550
© 1944 by American Dairy Science Association ®
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The Influence of a Synthetic Thyroprotein when Fed to Dairy Cows over a Three-Week Period*

Ralph P. Reece

Department of Dairy Husbandry, New Jersey Agricultural Experiment Station, New Brunswick, New Jersey

ABSTRACT

The feeding of 10 grams of Protamone daily for 3 weeks to a group of 5 dairy cows increased the butterfat content of the milk from 3.62 per cent to 4.11 per cent. The average milk production was increased from 23.3 lbs. to 25.0 lbs. per day. Losses in body weight were slight and heart rate increases were moderate. Solids-not-fat did not appear to be affected.

FOOTNOTES

* Journal Series Paper of the New Jersey Agricultural Experiment Station, Rutgers University, Department of Dairy Husbandry.






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Copyright © 1944 by the American Dairy Science Association ®.