Estudo clínico e histopatológico da genitália de fêmeas bovinas de corte descartadas após a 3ª Inseminação Artificial / Clinical and histopathologic study of genital system of beef cows slaughtered after third artificial insemination

RESUMO

Os exames clínicos, macroscópico e histopatológico post-mortem e de biópsia uterina revelaram em vinte e uma fêmea bovinas de corte descartadas após a terceira Inseminação Artificial que a principal causa de infertilidade fol a infecção uterina. Outras condições associadas ao complexo metrite/endometrite, tais como cisto folicular, hipoplasia ovariana, corpo lúteo cístico e cérvix sinuosa também foram observados. Houve correspondência entre todos os métodos de diagnóstico empregados. O exame clínico dos animais permitiu diagnosticar 76,19% das causas de infertilidade e 71,42% dos casos de infecção uterina, enquanto o exame macroscópico post-mortem demonstrou 95,23% dessas causas. Por outro lado, a biópsia uterina demonstrou a mesma acurácia para o diagnóstico de infecção uterina demonstrada no exame histopatológico post-mortem.

ABSTRACT

Twenty-one non-pregnant beef cows after third insemination were submitted to clinicai examination of the reproductive tract, including collection of samples for uterina biopsy. Twenty-four hours later they were slaughtered and macroscopic and microscopic examinations of the genital tract were performed. Uterina infections proved to be the major cause of infertility, also associated to others disturbances, such as cystic ovarian disease, ovarian hypoplasia, cystic corpus luteum and sinuosity of the cervix presented in minar cases. Diagnose obtained through rectal palpation of the genital tract, uterina biopsy and post-mortem histopathologyc showed good conformity. Through rectal palpation accurately diagnosed 71,42% of the cows with uterina ifection and 76,19% of ali abnormalities. The post-mortem macroscopic examination of the genital tract found out 95,23% of the pathologic changes presented. Every samples obtained by uterina biopsy showed to uterina infections, which were later confirmed by the post-mortem histopathologic examination. In conclusion, the main cause of infertility in this group of cows was uterina infections.