EFFECT OF SUBLUTEAL DOSE OF PROSTAGLANDIN F2α ADMINISTRATION DURING ARTIFICIAL INSEMINATION ON FERTILITY RATE IN COWS

Abstract
The study was conducted in the dairy cows which are brought to the artificial insemination unit of Teaching Veterinary Clinical Complex (TVCC), Namakkal. A total of twenty calved cows were used for this study. In treatment groups (10 cows) One ml of prostaglandin F2α (5 mg) were mixed along with 39 ml of distilled water to make 125 μg of prostaglandin F2α (subluteal dose) per ml and injected through ear vein at the time of artificial insemination (AI). The control cows (10 cows) were inseminated at oestrum without any treatment. Transrectal ultrasonographic study of the ovary was done to study follicular status before inseminating the cows. Ovulatory response in treatment and control were monitored ultrasonographically on day 10 post AI. The pregnancy was confirmed 60 days after insemination in both the groups. The collected data was analyzed statistically. Ovulatory response in treatment and control were monitored by ultrasonography on day 10 post AI. The pregnancy was confirmed 60 days after insemination in both the groups. Follicular size at the time of the AI was similar (12.91±0.14 mm and 12.80±0.17 mm) between experimental and control groups and the time of ovulation between experimental and control group was17.93 ±0.63 and 24.25±1.20 hrs, respectively. Conception rate was 70.00% in experimental and 40.00% in control groups. In this research we conclude that higher pregnancy rate obtained in experimental group might be due to the optimum size of the ovulatory follicle, earlier ovulation and more viable spermatozoa at the time of ovulation.
Description
TNV_35thVCRI_CA_Dec-2019_IFBP-14
Keywords
Veterinary Science
Citation