INSEMINAÇÃO ARTIFICIAL EM TEMPO FIXO EM VACAS LEITEIRAS DE ALTA PRODUÇÃO NO BRASIL

Abstract

This work addresses a recent literature review on IATF - artificial insemination in fixed time in dairy cows, a technique that has been widely used and has been growing every year, being indispensable to increase the service fee, conception rate, pregnancy rate and problems related to the observation of heat in specialized high production farms. All suitable cows are synchronized after the voluntary waiting period, which varies from 45 to 60 days and are inseminated at a predetermined time without the need for estrus observation, significantly increasing the service rate and the reproductive efficiency of the farm. Reproductive efficiency has a high relationship with productivity and profitability in dairy farms and in this literature review the IATF technique will be presented in relation to hormonal programs that are superior in high-yielding cows, reporting all hormonal use according to each phase of synchronization, from the beginning of the emergence of a follicular wave, to the moment of insemination and its benefits in relation to reproductive efficiency in specialized farms.