DIAGNÓSTICO DE CISTO OVARIANO EM VACAS DE LEITE

Abstract

The ovarian cyst is one of the most recurrent problems in animal reproduction, with a significant impact on the reduction of reproductive efficiency. Conceptually, cystic ovarian disease is characterized by the persistence of an anovulatory follicular structure greater than 2.5 cm in diameter, for a period longer than ten days, in the absence of a corpus luteum and with interruption of normal estrous cycles. While the cyst persists in the cows, they become infertile. The possible cause of ovulation failure is a deficiency of LH receptors in the ovary and not a primary deficiency of this hormone. Different methods can be used in the treatment, such as the Ovsynch protocol, sequential applications of GnRH and PGF2alpha, luteinizing hormone, among others. Given this context, this case report aimed to monitor two dairy cows diagnosed with an ovarian cyst. The diagnosis of the ovarian cyst is performed concomitantly, when carrying out the reproductive follow-up of the animals, and in these cases, the transrectal ultrasonography exam is the most routinely used. After the diagnosis of this pathology, the animals were treated with the Ovsynch protocol. After that, an ultrasound examination was carried out, which verified the efficiency of the treatment, after 30 days TAI of 3 managements was carried out with a positive pregnancy confirmation after 30 days of insemination.