Ovarian hormone concentrations and genital swelling patterns in female chimpanzees with Norplant implants
Abstract 10.1002/(SICI)1098-2361(1997)16:33.3.CO;2-A The purpose of this study was to assess the effects of Norplant implants on ovarian hormone secretion and genital swelling patterns in female chimpanzees. Urine samples were collected during one natural cycle before (n = 5 females) and one cycle ∼6 months following (n = 7 females) insertion of Norplant implants. Genital swelling […]
Estrogen metabolism in the Asian elephant (Elephas maximus)
Abstract 10.1002/zoo.1430110203.abs Estradiol-17β metabolism was studied in two female Asian elephants (Elephas maximus). In an initial study, 500 μCi of tritiated estradiol-17β was injected iv into a single animal, and 0, 30 and 60 min serum samples were collected as well as all excreted urine and feces for 24 hr. In a second study, 1.5 […]
An automated assay for fecal estrogen conjugates in the determination of sex in avian species
Abstract 10.1002/zoo.1430100410.abs Recently captive propagation of psitticines has become necessary in order to preserve and breed endangered species. As habitat destruction increases and importation restrictions become more stringent, the need for a reliable and noninvasive technique for sex assignment is essential to improve the productivity of breeding and raising birds in captivity. One aspect of […]