Temporality of ovarian steroids and LH/FSH pulse profiles encompassing selection of the dominant follicle in heifers

Autor:	Victor E, Gomez-León, O J, Ginther, Rafael R, Domingues, Leticia P, Sanglard, Milo C, Wiltbank
Rok vydání:	2022
Předmět:	Reproductive Medicine Cell Biology General Medicine
Zdroj:	Biology of Reproduction. 108:269-278
ISSN:	1529-7268 0006-3363
DOI:	10.1093/biolre/ioac201
Popis:	The tested hypotheses were (1) LH/FSH pulses and F2 diameter are diminished by P4 and, (2) E2 increases during the transition to deviation and alters LH/FSH pulses. On Day 5 (Day 0 = ovulation), heifers were randomized into an untreated group (HiP4, n = 11), and a prostaglandin analog treated group (NoP4, n = 10). On Day 6, a follicular wave was induced by follicle ablation. Ultrasound and blood collections were performed every 12 h from Days 7 to 11. Blood was collected every 15 min for 10 h on Day 9 (largest follicle expected to be ~7.5 mm). Estradiol was ~75% greater (0.36 ± 0.14 vs 0.63 ± 0.19 pg/mL) in heifers with F1 ≥ 7.2 mm than in heifers with F1
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b65dc5e3a3eeb884fe05c2c703f54d7d https://doi.org/10.1093/biolre/ioac201 Zobrazit plný text záznamu