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THE EFFECTS OF PROSTAGLANDINS AND INDOMETHACIN ON OVULATION IN THE PERFUSED FOWL OVARY
Tanaka, K.,Higuchi, T.,Tawarazumita, M.,Hertelendy, F. Asian Australasian Association of Animal Productio 1992 Animal Bioscience Vol.5 No.1
The effects of prostaglandins (PG) and indomethacin, a PG synthesis inhibitor, on ovulation in the perfused fowl ovary were studied. Laying hens were killed by cutting the jugular vein 18-19 h before expected ovulation of the second follicle of a clutch sequence. The cannulated ovary was dissected free and connected with a recycling perfusion apparatus. Agents to be studied for their effects on ovulation were added to the perfusion fluid. $PGF_{2{\alpha}}$ at 0.1 and 1 mg/l induced ovulation, with a success rate of 25% and 30%, respectively. The same doses of $PGE_2$ were effective at 60% and 63%, respectively. Indomethacin partially blocked gonadotrophin-induced ovulation. It is suggested that PGs may play a supportive role in the process of follicular rupture in the domestic fowl.