Piometra em égua doadora de embrião

Abstract

Equine farming has been growing steadily in the country, and equine reproduction is one of the areas that stands out most internationally. Horses are subject to numerous reproductive diseases, with economic consequences for animal owners; Among them, it is possible to highlight pyometra. Pyometra is a condition that affects the reproductive tract of entire females, uncommon in the equine species, of multifactorial origin and little diagnosed due to the absence of characteristic signs. It is a change generally associated with vaginitis and cervicitis, characterized by the accumulation of pus in the uterus, and can occur in mares with anatomical changes or not in the perineum region. The bacterium Streptococcus equi ssp. zooepidemicus is the main microorganism isolated in culture samples in cases of equine pyometra. It can be developed with or without cervical occlusion, causing retention or elimination of purulent contents. This case report describes a case of equine pyometra caused by Klebsiella sp. demonstrating resistance to practically all antimicrobials tested on the antibiogram. The mare had a problematic history, as she showed a large accumulation of intrauterine fluid during the estrus phase. In July 2024, during the first estrus of the season, it was possible to obtain a positive embryo collection, however, after the embryo transfer, the recipient presented liquid content in the uterus. The donor presented her second estrus of the season only in September 2024, when materials for culture and antibiogram were collected, followed by uterine lavage, making a clinical diagnosis of pyometra possible.