Noninvasive monitoring of female reproductive hormone metabolites in the endangered European mink (Mustela lutreola)

摘要: This study examined the reproductive physiology of female European mink (Mustela lutreola) to augment available information on estrus, ovulation, and pregnancy with long-term goal supporting ex situ breeding management this highly endangered species. Fecal hormone metabolites were measured using EIAs for estrogen 20-oxo-pregnane metabolites. Seasonal profiles established. A comparison fluctuations in pregnant nonpregnant females showed that both were significantly elevated during gestation, which is 42 days length. Delayed implantation or embryonic diapause does not occur Litter size was correlated levels but concentrations. During lactation, metabolite remained higher than females. The season characterized by peaks vaginal cornified cells fecal levels. Up four identified confirmed are seasonally polyestrous. results measurements indicated hCG can be applied induce ovulation. With establishment noninvasive method, we present a new tool support population