Prostaglandin levels in plasma and follicular and uterine tissues of the quail in relation to midsequence oviposition.
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Changes in the concentration of prostaglandin (PG) F and E in plasma and reproductive tissues were measured during the oviposition cycle in the quail. Tissue samples were collected from the shell gland (uterus), the three largest preovulatory follicles, and the largest postovulatory follicle (R1). Plasma and tissue samples were collected 16 and 8hr before and immediately after a midsequence oviposition. Plasma PGF and PGE concentrations showed a 2-fold increase at oviposition (P<0.05). PGF concentrations in the preovulatory follicles remained stable, but the PGF level in R1 at oviposition significantly increased (P<0.05). Follicular PGE concentrations were not different from preceding point value. There were no changes in PGF and PGE concentrations of the uterine tissue throughout the oviposition cycle. These results suggest that the increases in plasma PGF and PGE levels may play a role in the regulation of oviposition in the quail and the ovarian follicle may be the origin of the increased plasma PGs at oviposition.
- 日本家禽学会の論文
日本家禽学会 | 論文
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