PARENT SESSION
BIOLOGY OF THE FEMALE REPRODUCTIVE TRACT
Harborside C
7:30 AM-10:00 AM

(533) THE RESPONSE OF CASPIAN MARES TO ARTIFICIAL OVULATION OUT OF REPRODUCTIVE SEASON.

Mirian, Jalal¹, Dordari, Shahram¹, ¹ Animal Research Center,Department of Education And Research,Ministry of Jehad-e-Keshavarsi, Tehran, Iran

ABSTRACT- This study has performed to increase the Caspian horse population, the breed which is represented by less than 1000 in the world. Five healthy Caspian mares, age 5-10 years, received 2 injections of PGF₂ and were mated naturally; after 7 days, the embryos were collected by flushing. Finally, with 10 flushings, 7 embryos were collected from 5 mares. The results showed the ovulation in left ovary was more than right(80%). Capacity of normal uterus was 500-800ml and the tonisity of cervix in most of these mares was rigid which this characteristic is a useful factor in this breed.

KEY WORDS: Caspian horse, Reproduction, Ovulation