Susceptibility to persistent breeding-induced endometritis in the mare: Relationship to endometrial biopsy score and age, and variations between seasons

E. M. Woodward, M. Christoffersen, J. Campos, E. L. Squires, M. H.T. Troedsson

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

The objectives were to: (1) investigate the associations of age and endometrial biopsy score with uterine fluid retention after insemination; and (2) determine if a strict classification of susceptibility to persistent breeding-induced endometritis (PBIE) based on biopsy score, endometrial cytology, and fluid retention after inseminations, is consistent over subsequent breeding seasons. In Experiment 1, 57 mares were inseminated with 10 9 freeze-killed sperm during estrus and evaluated for uterine fluid retention 48 h and 96 h after insemination. Comparisons were made between fluid retention and biopsy score or age. In Experiment 2, a subset of 14 mares was classified for susceptibility to persistent breeding-induced endometritis in two subsequent breeding seasons. Biopsy score and age were associated with fluid retention (P < 0.001). In addition, age was related to biopsy score (P < 0.001). Of the mares examined for susceptibility, 36% (5 of 14) changed status during subsequent seasons. Three mares changed to a more severe classification (intermediate to susceptible, or resistant to intermediate), whereas two mares changed to a less severe classification (susceptible to intermediate).

Original languageEnglish
Pages (from-to)495-501
Number of pages7
JournalTheriogenology
Volume78
Issue number3
DOIs
StatePublished - Aug 2012

Bibliographical note

Funding Information:
This work was supported by funds from the Gluck Fellowship in the Department of Veterinary Science and the Janet H. Koller Endowment for Equine Research. The authors thank Mr. Lynn Ennis, Mr. Kevin Gallagher, and the University of Kentucky's Maine Chance Farm for the management and care of the horses, the University of Kentucky Veterinary Diagnostic Laboratory for the use of their equipment and sample processing, and Dr. Gabriel Davolli and Ms. Pauline Peugnet for their technical assistance.

Keywords

  • Endometrial biopsy
  • Equine
  • Horse
  • Intrauterine fluid
  • Uterus

ASJC Scopus subject areas

  • Small Animals
  • Food Animals
  • Animal Science and Zoology
  • Equine

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