Urinary steroid evaluations to monitor ovarian function in exotic ungulates: VIII. Correspondence of urinary and plasma steroids in the llama (Lama glama) during nonconceptive and conceptive cycles

摘要: Ovarian function was evaluated in mature female llamas (n = 2) during seven ovulations 2 conceptive and 5 nonconceptive ovarian cycles by measuring urinary plasma hormone concentrations. Ovulation induced three different methods; administration of gonadotropin-releasing (GnRH), copulation with a vasectomized male an intact male. Plasma estradiol progesterone concentrations, concentrations estrogen conjugates two metabolites, pregnanediol-3-glucuronide (PdG), immunoreactive (iPdG), were compared to determine their value monitoring function. Estrogen urine corresponded levels accurately reflected changes follicular activity when over several daily samples. iPdG reliable indicators luteal function. These data represent the first comparison blood measurements for complete cycle ungulate, demonstrates that either can be used assess this species.