Urinary steroid evaluations to monitor ovarian function in exotic ungulates: II. Comparison between the giraffe (giraffa camelopardalis) and the okapi (okapia johnstoni)
Ovarian activity in the female giraffe was evaluated during the nonfertile ovarian cycle and during the terminal stages of gestation. Progesterone metabolites, in the form of pregnanediol‐3‐glucuronide (PdG), were measured in daily random urine samples collected from four adult parous giraffes. The follicular phase averaged 4.0 ± 0.1 days in length (N = 12; range […]