title: Metabolism of steroids by left ovaries of Gallus domesticus during post-embryonic maturation.
abstract: Homogenates of left ovaries from laying hens incubated with labeled pregnenolone or progesterone produced slightly higher amounts of estrone than of estradiol-17 beta. Progesterone, 17 alpha-hydroxyprogesterone, androstenedione and testosterone are probable intermediates. Left ovaries from 1-, 21- and 40-days-old chicks incubated with progesterone as substrate formed increasing amounts of androgens and estrogens. Weight per weight, ovaries from one-day-old chicks have a greater steroidogenic capability than those from adults. The comparative steroidogenesis by testes and left ovaries from Gallus domesticus during growth is also reported.
mesh_terms: D000728:Androgens / Q000096:biosynthesis*; D000818:Animals; D002642:Chick Embryo; D002645:Chickens; D004967:Estrogens / Q000096:biosynthesis*; D005260:Female; D008297:Male; D009929:Organ Size; D010053:Ovary / Q000378:metabolism*; D011284:Pregnenolone / Q000378:metabolism*; D011374:Progesterone / Q000378:metabolism*; D013737:Testis / Q000378:metabolism
chemical_list: D000728:Androgens; D004967:Estrogens; D011374:Progesterone; D011284:Pregnenolone