[The steroidogenic sites in the Peking, Barbary and hybrids (Peking male X Barbary female) ducks: histochemistry, ultrastructure, biochemical complements (author's transl)].
The follicular theca steroid cells are much more numerous in the Peking female than in the Barbary female. Biochemical analyses show that the transfromation percentage of pregnenolone in progesterone is higher in the first than in the second (73% greater than 52%); in the same way, we dose more plasmatic oestradiol in the Piking than in the Barbary female (160 pg/ml greater than 69 pg/ml). In the hybrid female, resulting from the crossing of Peking male X Barbary female, many steroid cells are destroyed during the aging process; the transformation percentage in then 14,50% (30% in the young females) and the seric concentration is 7 pg/ml (59 pg/ml in the young females).
D000818:Animals; D004372:Ducks / Q000378:metabolism*; D004958:Estradiol / Q000097:blood; D005260:Female; D006824:Hybridization, Genetic; D008297:Male; D011284:Pregnenolone / Q000378:metabolism*; D011374:Progesterone / Q000096:biosynthesis*; D013045:Species Specificity
D011374:Progesterone; D004958:Estradiol; D011284:Pregnenolone
Les sites stéroïdogènes chez les canes Pékin, Barbarie et Hybrides (Pékin male X Barbarie female).