Abstract
The PhD project aims to enhance studies on luteal regression in cattle. For this three researches will be conducted. Experiment 1: aim to evaluate LH effects on the rescue of P4 secretion after challenge with cloprostenol sodium at D7 of estrous cycle (D0=estrous). Caracu cows on D7 will bee submitted to the following treatments: Group 1 (G1): saline, G2: saline associate to GnRH antagoni…