PGF2α (250 mcg d-cloprostenol) Effectiveness of two Schemes for Estrus Induction in Brahman Bovine Females with Lasting Anestrus

The reproductive behavior of Brahman breeding cows subject to estrus induction was assessed, at the “Rancho Bonito Farm”, Gamelotal area, Lara State, Venezuela. The experiment lasted 90 days, and was based on two estrus induction schemes (Progesterone + Estradiol Benzoate and Progesterone + PMSG). Following 72 h of treatment, 62.5 % of the cows that received P4 + PMSG were fertilized; whereas the P4 + BE treatment induced fertilization of 25 % (P < 0.05). During the 90 days, 93.7 % of the cows that received P4 + PMSG, and 75 % under the P4 + BE treatment, were fertilized, which demonstrated the effectiveness of the schemes.