Efeito da adição de angiotensina-(1-7) na taxa de estradiol de cabras submetidas a protocolo de sincronização do estro e ovulação / Effect of angiotensin (1-7) on estradiol rate of goats undergoing synchronization protocol of estrus and ovulation

ABSTRACT

This study evaluated the effect of angiotensin- (1-7) on the estradiol levels of goats submitted to aprotocol of synchronization of estrus and ovulation when applied close to the ovulatory period. The animalswere divided into two experimental groups Control (n = 10) and Angiotensin- (1-7) (n = 10). All animals weresubmitted to estrus synchronization protocol and on days 12 and 13 the animals received the treatmentsaccording to the experimental groups and blood samples from the external jugular vein were collected every 12hours for estradiol dosing (E2) by the Elisa test. The results were submitted to analysis of variance followed bythe Dunnett's test (P <0.05). No increase in serum estradiol concentration was observed in any of thetreatments. It was concluded that the application of angiotensin- (1-7) during the preovulatory period, with onlytwo applications, was not sufficient to significantly increase estradiol levels.