Vol. 9, Special Issue 8 (2020)

Author(s):
K Senthilkumar, M Selvaraju and M Palanisamy

Abstract:
The study was conducted in postpartum buffaloes which were brought for artificial insemination unit during natural estrum. A total of 50 calved buffaloes were used in this study. 500 µg of natural prostaglandin F₂α (subluteal dose) was injected through ear vein at the time of artificial insemination (AI). The control animals were inseminated without any treatment. Transrectal ultrasonographic study of the ovary was done to study follicular status before inseminating the buffaloes. Ovulatory response in treatment and control groups were monitored by ultrasonography on day 10 post AI. The pregnancy was confirmed 30 days after insemination in both the groups by ultrasonographic examination. Follicular size at the time of the AI was similar (12.62 ± 0. 27 mm and 12.47 ± 0.07 mm) between experimental and control groups and the time of ovulation between experimental and control group was 17.04 ± 0.20 and 22.78 ± 0.46 hrs, respectively. Conception rate was 52.50% in experimental and 40.00% in control groups.