J. Anim Sci.
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J. Anim Sci. 1948. 7:291-297.
© 1948 American Society of Animal Science
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The Influence of Iodized Casein on the Metabolism of Milk Cows

Grete Thorbek, I. G. Hansen and Johs. Moustgaard

Danish State Experimental Laboratory1

Abstract

The admixture of 25 gms. of iodized casein to the daily ration gave rise to an increase of milk production of up to 54 percent. Despite a considerable positive energy balance before the treatment with iodized casein, the live weight of the cows decreased from 10 to 17 percent.

In the course of the treatment the heat production increased by about 30 percent, and the consumption of NCF per milk unit produced increased by about 65 percent.

The consumption of NCF per milk unit was for the increased production resulting from feeding iodized casein about three times the normal.

An admixture of copper salts did not apparently influence the effect of the iodized casein.

The treatment with iodized casein caused the frequency of the heart to increase by 40 to 50 percent. Otherwise no abnormality of the function of the heart could be demonstrated by means of electrocardiography.

Footnotes

1 Department of Animal Physiology, Copenhagen, Denmark.






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Copyright © 1948 by the American Society of Animal Science.