Evaluation of reproductive performance of dairy heifers subjected to two estrus detection systems and treated with two prostaglandin formulations

摘要

Efficient and accurate identification of estrus is critical for the success of estrous detection based reproductive management. We hypothesized that management of dairy heifers with the aid of an automated estrous detection system (AESJ would improveservice rate and consequently the reproductive performance of dairy heifers. In addition we hypothesized that treatment of heifers with cloprostenol (CLO) would improve pregnancy per service compared with treatment with dinoprost (DIN). The objectives were to evaluate the reproductive performance of dairy heifers managed with the aid of an AES vs a mounting detector device (MD) and synchronized with CLO vs DIN.