Plasma concentration of LH and testosterone in castrated rams treated with testosterone or testosterone propionate.
After injection of castrated rams with 600 mg testosterone or testosterone propionate, plasma LH levels were biphasic, with significant decreases at 6-10 and 96 h after treatment. These results support the suggestion that testosterone acts at the hypothalamo-pituitary level by two different mechanisms.
D000818:Animals; D002369:Castration; D007986:Luteinizing Hormone / Q000097:blood*; D008297:Male; D012756:Sheep; D013739:Testosterone / Q000031:analogs & derivatives* / Q000097:blood / Q000494:pharmacology*
D013739:Testosterone; D007986:Luteinizing Hormone