J. Anim Sci.
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J. Anim Sci. 1972. 35:351-356.
© 1972 American Society of Animal Science
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Effects of Acute Injections of Dexamethasone on Selective Deposition of Bovine Intramuscular Fat1

John R. Brethour2

Fort Hays Branch Experiment Station, Hays, Kansas 67601

Abstract

A highly significant increase in marbling score (intramuscular fat deposition) was obtained in stilbestrol-fed cattle with acute injections of 10 or 20 mg dexamethasone at least 33 days pre-slaughter. Environmental temperature did not affect response. Three-day serial injections of dexamethasone produced no response. Insulin did not augment nor duplicate results of the corticosteroid. Five g iodinated casein per head daily for 3 days decreased marbling score, especially when it accompanied dexamethasone. A 2-day treatment of oral methimazole had no effect.

Footnotes

1 Contribution No. 255, Fort Hays Branch Experiment Station, Hays, Kansas.

2 Associate Professor, Kansas State University.






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Copyright © 1972 by the American Society of Animal Science.