Endocrine correlates of partner preference behavior in rams

• Published in: Biology of reproduction Vol. 55; no. 1; pp. 120 - 126
• Main Authors: Resko, J.A. (Oregon Health Sciences University, Portland, OR.), Perkins, A, Roselli, C.E, Fitzgerald, J.A, Choate, J.V.A, Stormshak, F
• Format: Journal Article
• Language: English
• Published: Madison, WI Society for the Study of Reproduction 01.07.1996
• Subjects: 17-alpha-Hydroxyprogesterone; 17-alpha-Hydroxyprogesterone - metabolism; ACTIVIDAD ENZIMATICA; ACTIVITE ENZYMATIQUE; ANDROSTENEDIONA; ANDROSTENEDIONE; Androstenedione - blood; Animals; Aromatase; Aromatase - metabolism; Behavioral psychophysiology; BELIER; Biological and medical sciences; biosynthesis; blood; blood serum; brain; Brain - enzymology; CEREBRO; COMPORTAMIENTO SEXUAL; COMPORTEMENT SEXUEL; Dihydrotestosterone; Dihydrotestosterone - blood; ENCEPHALE; enzyme activity; enzymology; estradiol; Estradiol - blood; ESTROGENOS; estrone; Estrone - blood; Female; Fundamental and applied biological sciences. Psychology; Gonadal Steroid Hormones; Gonadal Steroid Hormones - blood; homosexuality; Homosexuality, Male; HORMONAS; HORMONE; hormone secretion; Hormones and behavior; Male; metabolism; METABOLISME DES STEROIDES; METABOLISMO DE ESTEROIDES; MORUECO; OESTROGENE; OXIDORREDUCTASAS; OXYDOREDUCTASE; oxygenases; physiology; Preoptic Area; Preoptic Area - enzymology; PROGESTERONA; PROGESTERONE; Progesterone - metabolism; Psychology. Psychoanalysis. Psychiatry; Psychology. Psychophysiology; rams; SECRECION; SECRETION; SERUM SANGUIN; Sexual Behavior, Animal; Sexual Behavior, Animal - physiology; Sheep; steroidogenesis; SUERO SANGUINEO; testes; TESTICULE; TESTICULOS; Testis; Testis - metabolism; TESTOSTERONAS; TESTOSTERONE; Testosterone - biosynthesis; Testosterone - blood; Androgen; Enzyme; Estrogen; Central nervous system; Sexual behavior; 17β-Estradiol; Male; Mate selection; Estrogen synthase; Testicle; Male genital system; Breeding behavior; Ovarian hormone; Testosterone; Vertebrata; Mammalia; Sheep; Steroidogenesis; Artiodactyla; Testicular hormone; Hormonal investigation; Sex steroid hormone; Ungulata; Brain (vertebrata)

We studied a unique group of rams that would not mate with estrous ewes during extensive testing for sexual behavior. The same rams courted males in preference to females in 30-min sexual preference tests and were classified as male-oriented (n = 6). We compared the following endocrine profiles: sys...