EFFECT OF THE ADMINISTRATION OF SERUM AND RECOMBINANT EQUINE CHORIONIC GONADOTROPIN ON OVARIAN DYNAMICS AND CONCEPTION RATE IN ANESTRUS PRIMIPAROUS BRANGUS COWS

The objective was to determine the size of the dominant ovulatory follicle, the ovulation time and the conception rate of cows in anestrus treated with serum equine chorionic gonadotropin (eCG), recombinant chorionic gonadotropin and untreated controls. 57 anestrus primiparous Brangus cows were used with 70 ± 26 days of calving and a body condition of 2.50 ± 0.15. They were synchronized with a FTAI protocol based on estrogen and progesterone...