Using a simplified field progestagen method to assess ovarian activity in female African elephants
Keywords: AENP, Addo Elephant National Park; CV, coefficient of variation; EIA, enzymeimmunoassay; FPM, fecal progestagen metabolites; PPD, postpartum duration (in years); SCBI, Smithsonian Conservation Biology Institute; 5α-DHP, 5α-pregnane-3,20-dione; 5α-P-3-OH,