Histopatology of the reproductive tract of Nellore pubertal heifers with genital ureaplasmosis

Regiani Pôrto, Benedito Oliveira Filho, Henrique Ferraz, Luciano Caixeta, Marco Antonio Viu, Maria Lúcia Gambarini

Research output: Contribution to journalArticlepeer-review

Abstract

In order to study and characterize the lesions in the reproductive tract of Nellore heifers naturally infected with Ureaplasma diversum and presenting granular vulvovaginitis syndrome (GVS), fragments of uterine tube, uterus, cervix, vagina and vulva of 20 animals were evaluated. The macroscopic lesions of the vulvovaginal mucosa were classified in scores of “1” mild, until “4”, severe inflammation and pustular or necrotic lesions. The histopathological evaluation was performed using scores of “1” to “4”, according to the inflammatory alterations. The fragments with severe microscopic lesions (3 and 4) were from the uterine tubes and uterus, which showed leukocytes infiltration and destruction and/or necrosis of epithelium. Alterations in the lower reproductive tract fragments were mild, but characteristics of acute inflammatory processes. The histopathological findings of the reproductive tract of females naturally infected with Ureaplasma diversum are consistent with injuries that compromise the environment from the local where spermatozoa acquires ability to fertilize an oocyte until those where the oocyte is fertilized. Therefore, animals with GVS should be identified early in the herd, because, besides the reduction in the fertility rates caused by tissue damages, they can contribute to disseminate the microorganism.

Original languageEnglish (US)
Pages (from-to)2987-2996
Number of pages10
JournalAnais da Academia Brasileira de Ciencias
Volume89
Issue number4
DOIs
StatePublished - Oct 1 2017

Bibliographical note

Funding Information:
Authors would like to thank the owner and herdsmen of Fazenda Santa Rosa for their help. This study was partially supported by the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) of Brazil, contract n.478716/2006-0. M.L. Gambarini was supported by CNPq.

Publisher Copyright:
© 2017, Academia Brasileira de Ciencias. All rights reserved.

Keywords

  • Bovine
  • Reproduction
  • Tissue evaluation
  • Ureaplasma diversum

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