Estimated ovulation rate in local ewes during the periestrus period by ultrasonography | ||
| Al-Anbar Journal of Veterinary Sciences | ||
| Article 1, Volume 5, Issue 2, December 2012, Pages 259-264 | ||
| Authors | ||
| H. M. Al-Rawi; M. Taha; H. Fozei | ||
| Abstract | ||
| This study was aimed to estimated the ovulation rate in ewes during the periestrus period by ultrasonography. Ten non pregnant local ewes were used in this study. The ewes were treated with progesterone by using intravaginal sponges impregnated with 20 mg chronolone (fluorogesterone Acetate) for 13 days and then injected with 400 IU of eCG (Folligon)IM 48hr before sponge withdrawal and injected with 300 IU of LH (Chorulon) IM subsequently at the time of sponges removal. Follicular size and numbers in each ovaries were monitored by daily ultrasonographic examination from day 12to14 after the onset of treatment with sponges. Follicles with vertical diameters ≥ 3mm are recorded. The animals examined by laboratomy 10 days after sponge withdrawal for the number of CLs in each ovary and compared with the number of CLs which monitored by ultrasonographic. The predictive value of positive test, sensitivity, and accuracy are made to evaluate the results. The results of this study showed that the predictive value of positive test, sensitivity, and accuracy to estimated ovulation rate by measurement the size of ovarian follicles by ultrasonography are 85.2%, 79.3%, and 93.1% respectively. From the above mentioned results we conclude that counted number of follicles with vertical diameter ≥ 3mm monitored by ultrasonographic examination during the periestrus period could be used to estimated the ovulation rate and formation of corpus luteum in ewes. | ||
| Keywords | ||
| ewes; Estrus; Ultrasonography | ||
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