[Bovine 17-beta-estradiol during estrous cycle].
Using a highly specific antiserum, a method of plasma estradiol-17 beta determination by R.I.A. without chromatographic separation, was developed. Increasing on day 18, estradiol-17 beta reached a peak level of 8.6 pg/ml (6.4-12.6) at the onset of estrus. It then sharply decreased, and remained at a low level 1.75 pg/ml with secondary peaks on day 4-5, 12 and sometimes on day 8.
D000818:Animals; D002417:Cattle; D004958:Estradiol / Q000097:blood*; D004971:Estrus; D005260:Female; D011247:Pregnancy; D011863:Radioimmunoassay
D004958:Estradiol
Variations du 17 beta aestradiol au cours du cycle aestral chez la Vache