Serum gonadotrophin levels in prepubertally castrated male sheep treated for long periods with propionated testosterone, dihydrotestosterone, 19-hydroxytestosterone or oestradiol

Publisher Website
Google Scholar
Abstract
At different times of the year, groups of wethers were treated with 20 mg testosterone, dihydrotestosterone or 19-hydroxytestosterone propionates/day or 2 mg estradiol dipropionate/day, or the oil vehicle, for 6 wk after a 2 wk control period. LH [luteinizing hormone] and FSH [follicle stimulating hormone] values were determined by radioimmunoassay of serum samples collected at regular intervals. Estradiol and dihydrotestosterone reduced LH and FSH concentrations whereas 19-hydroxytestosterone and testosterone had no effect.