Journal Month: December
Published On: 03-09-2018 19:11:00
M.S. Rawy, D.R. Derar, T.M. El-Sherry and G.A. Megahed
Department of Theriogenology, Faculty of Veterinary Medicine, Assiut University, 71526 Assiut, Egypt
Present study investigated the changes in vascularity of preovulatory follicles and corpus luteum after induced ovulation. Three animals were examined ultrasonographically daily, using B-mode and colour Doppler for 12 follicular waves. Blood collected daily for progesterone assay. Blood area and blood area per cent were determined for the ovarian follicles. Single injection of Buserelin was used to induce ovulation for dominant follicles range from 9–18.9 mm. Ovulation rates of 100% was recorded. Ovulation occurred within 24–32 and 32–40 hours of treatment in 92.3% and 7.7% of trials, respectively. Blood area and blood area per cent were 19.18 ± 4.4 mm2 and 9.8 ± 2.6%, 8 hours before ovulation, respectively. After ovulation, BA increased (P> 0.05) when the corpus luteum was 18.1 ± 0.4 mm in diameter (day 7). On day 10, both, the BA and BA% decreased (P> 0.05) concomitant with the beginning of luteolysis. In conclusion ovulation occurred within 24-32 hours in 92.3% and 32-40 in 7.7% of induced follicles.
Key words: Camel, GnRH, follicles, corpus luteum, Doppler