Induction of ovulation in gilts with cloprostenol |
| |
Authors: | Srikandakumar A Downey B R |
| |
Affiliation: | Department of Animal Science Macdonald College of McGill University 21, 111 Lakeshore Road, Ste-Anne de Bellevue Quebec, Canada, H9X 1C0. |
| |
Abstract: | Prepuberal gilts were treated with 750 IU pregnant mare serum gonadotropin (PMSG) followed 72 h later by 500 IU human chorionic gonadotropin (hCG) to induce follicular growth and ovulation. In this model, ovulation occurred at 42 +/- 2 h post hCG treatment. When 500 mug of cloprostenol was injected at 34 and of 36 h after hCG injection, 78% of the preovulatory follicles ovulated by 38 h compared with 0% in the control gilts. In addition, plasma progesterone concentrations were significantly higher in the cloprostenol-treated group than in the control group (P<0.01) at 38 h, indicating luteinization along with premature ovulation. These results suggest that prostaglandin F(2)alpha (PGF(2)alpha) or an analog can be used to advance, synchronize or induce ovulation in gilts. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|