Failure of naloxone to stimulate luteinizing hormone secretion during pregnancy and steroid treatment of ovariectomized beef cows.

Abstract

The response of serum luteinizing hormone (LH) to naloxone, an opiate antagonist, and gonadotropin-releasing hormone (GnRH) was measured in cows in late pregnancy to assess opioid inhibition of LH. Blood samples were collected at 15-min intervals for 7 h. In a Latin Square arrangement, each cow (n = 6) received naloxone (0, 0.5, and 1.0 mg/kg BW, i.v.; 2… (More)

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@article{Rund1990FailureON, title={Failure of naloxone to stimulate luteinizing hormone secretion during pregnancy and steroid treatment of ovariectomized beef cows.}, author={Laurie A Rund and Frederick N. Thompson and Darryl Jay Byerley and Terry E. Kiser}, journal={Biology of reproduction}, year={1990}, volume={42 4}, pages={619-24} }