Abstract
Two experiments will be realized in order to elucidate some questions about the response of luteolytic PGF2a in Nellore cows. EXP I: Three hundred dry Nellore cows will be used in this experiment. Cows will be separated according to age, weight, BCS and parity, in a randomized factorial arrangement (2x4), where we have two ages of CL (7 and 9 day of the estrous cycle), with four differen…