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Journal of Dairy Science Vol. 56 No. 8 1058-1062
© 1973 by American Dairy Science Association ®
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Effect of Estradiol-17ß on Vaginal Thermal Conductance in Cattle1

R. M. Abrams2, W. W. Thatcher3, F. W. Bazer4 and C. J. Wilcox3

2 Departments of Obstetrics and Gynecology
3 Dairy Science
and4 Animal Science, University of Florida, Gainesville 32601

ABSTRACT

With a new self-retaining heat flow probe, thermal conductance of the vagina of four Jersey heifers and one Angus-Holstein crossbres heifer was measured for 1 to 2 h before and 4 to 5 h after an intravenous injection of 3 mg estradiol-17ß. In three control experiments, only the injectate vehicle of absolute ethyl alcohol was given, Estradiol-17ß increased vaginal thermal conductance whereas no change occurred in control experiments. The estradiol-induced rise in vaginal thermal conductance appeared to result from an increase in rate of vaginal blood flow.

FOOTNOTES

1 Florida Agricultural Experiment Station Journal Series 4724.






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Copyright © 1973 by the American Dairy Science Association ®.