Seasonal variation in plasma testosterone, luteinizing hormone concentrations and LH-RH responsiveness in mature, male rusa deer (Cervus rusa timorensis).
Plasma testosterone and luteinizing hormone (LH) concentrations in immobilized or yarded rusa stags (Cervus rusa timorensis) were investigated over a two-year period. Testosterone concentrations showed a minor elevation in autumn (May) and reached maximal levels in late winter-early spring (August) coinciding with the rut. Luteinizing hormone in plasma was only detectable from January to May. Maximal responsiveness of the pituitary-gonadal axis to LH-RH stimulation was recorded in August. The combination of Fentaz (fentanylcitrate and azaperone) and Rompun (xylazine hydrochloride) for immobilizing deer influences hypothalamic function.
van Mourik
S
S
Stelmasiak
T
T
Outch
K H
KH
D000064:Acclimatization; D000726:Androgen Antagonists / Q000494:pharmacology; D000818:Animals; D003534:Cyproterone / Q000031:analogs & derivatives / Q000494:pharmacology; D017373:Cyproterone Acetate; D003670:Deer / Q000097:blood*; D007987:Gonadotropin-Releasing Hormone / Q000494:pharmacology*; D007986:Luteinizing Hormone / Q000097:blood*; D008297:Male; D012621:Seasons; D013739:Testosterone / Q000097:blood*
D000726:Androgen Antagonists; D007987:Gonadotropin-Releasing Hormone; D013739:Testosterone; D017373:Cyproterone Acetate; D007986:Luteinizing Hormone; D003534:Cyproterone