Progesterone, estrogen, LH, FSH and PRL concentrations in plasma during the estrous cycle in goat.
Progesterone, estrogen, LH, FSH and PRL variations in plasma were measured in 7 goats by RIA. Mean progesterone level was 0.0-0.8 ng/ml in estrus and 1-4 ng/ml in diestrus. Estrogen levels ranged from 10 to 20 pg/ml in diestrus; around estrus, a peak of 26.9 +/- 3.18 pg/ml was observed. LH values were 0.5-3.0 ng/ml with a preovulatory peak (40.7 +/- 10.12 ng/ml) 8 to 24 h after the onset of estrus. Except for a peak (14.0 +/- 3.09 ng/ml) coincident with LH surge, plasma FSH level ranged between 2 and 4 ng/ml. PRL level averaged 2-5 ng/ml in diestrus but high concentrations of this hormone were seen around estrus.
D000818:Animals; D004967:Estrogens / Q000097:blood*; D004971:Estrus; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood; D006041:Goats / Q000097:blood*; D006065:Gonadotropins, Pituitary / Q000097:blood*; D007986:Luteinizing Hormone / Q000097:blood; D011247:Pregnancy; D011374:Progesterone / Q000097:blood*; D011388:Prolactin / Q000097:blood
D004967:Estrogens; D006065:Gonadotropins, Pituitary; D011374:Progesterone; D011388:Prolactin; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone