Evidence of a sex related difference of transcortin level in adult ducks.
Corticosteroid binding globulin (CBG) serum level as evaluated by either equilibrium dialysis or gel filtration was found to be higher in male than in female adult ducks during the reproductive period. Castration did not modify CBG concentrations in females, whereas in males it induced a significant decreased in CBG, to the level observed in intact or castrated females. Testosterone injections administrated to castrated females increased CBG to the level of adult intact males. Finally it was found that testosterone stimulated CBG production in ducks without altering thyroxine levels.
D000818:Animals; D002369:Castration; D002850:Chromatography, Gel; D003956:Dialysis; D004372:Ducks / Q000502:physiology*; D005260:Female; D008297:Male; D012621:Seasons; D012727:Sex Characteristics; D013739:Testosterone / Q000494:pharmacology; D013974:Thyroxine / Q000097:blood; D014156:Transcortin / Q000032:analysis*
D013739:Testosterone; D014156:Transcortin; D013974:Thyroxine