Excretion patterns of fecal progestagens, androgen and estrogen during pregnancy, parturition and post partum in okapi (Okapia johnstoni)

The aim of the present study was to establish a simple method to monitor ovarian activity and non-invasively diagnose pregnancy in okapi (Okapia johnstoni). The feces of a female okapi were collected daily or every 3 days for 28 months. Steroids in lyophilized feces were extracted with 80% methanol, and the fecal levels of immunoreactive […]