A comparison of sex steroid hormone excretion and metabolism by psittacine species

Abstract 10.1002/(SICI)1098-2361(1999)18:43.3.CO;2-4 The metabolism, excretory rates, and excretory patterns of carbon 14 (14C) radiolabeled estradiol (E2) and testosterone (T) were studied in female budgerigars (Melopsittacus undulatus) and orange-winged Amazon parrots (Amazona amazonica). Radiolabeled E2 and T were injected intramuscularly into six budgerigars and two orange-winged Amazon parrots. Serial fecal/urine samples were collected for 168 h […]