AVALIAÇÃO DA TAXA DE EXPRESSÃO DE ESTRO E A TAXA DE OVULAÇÃO EM NOVILHAS DE CORTE SUBMETIDAS A INDUÇÃO DA OVULAÇÃO COM PGF 2α DURANTE PROTOCOLO DE IATF

Abstract

The high age at first calving of beef heifers is due to inadequate genetic improvement programs adopted on farms. New technologies are emerging to improve the reproductive efficiency of these animals and manage exogenous controls in view of the IATF protocols. During the estrous cycle, one of these tools is the use of prostaglandins. Prostaglandins are widely used in treatment regimens due to their luteolytic effect, can synchronize estrus in heifers and have shown effective results in induction in recent studies. Thus, the purpose is to evaluate the effect of prostaglandins on pregnancy rates in Nellore heifers receiving IATF.