Fatal intestinal inflammatory lesions in equids in California: 710 cases (1990-2013)

Melissa Macías-Rioseco, Ashley E. Hill, Francisco A. Uzal

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


OBJECTIVE: To determine incidences and underlying causes of fatal intestinal inflammatory lesions (FIILs) and demographic characteristics of affected equids necropsied at any of the California Animal Health and Food Safety Laboratory facilities between January 1, 1990, and April 16, 2013. ANIMALS: 710 equids with FIILs, including colitis, duodenitis, enteritis, enterocolitis, enteropathy, enterotyphlitis, gastritis, gastroenteritis, ileitis, jejunitis, typhlitis, or typhlocolitis, alone or in combination. PROCEDURES: The medical records were reviewed, and data collected included animal age, sex, geographic origin, necropsy submission date, and breed, purpose, or characteristic of use. Descriptive statistics were compiled and reported as numbers and percentages. RESULTS: Colitis (323/710 [45.5%]), enteritis (146/710 [20.6%]), and typhlocolitis (138/710 [19.4%]) were the most common FIILs, and the underlying cause of most FIILs was categorized as either undetermined (465/710 [65.5%]) or bacterial (167/710 [23.5%]). The most common bacteria responsible for FIILs were Clostridium spp and Salmonella spp. CONCLUSIONS AND CLINICAL RELEVANCE: Results indicated that the underlying cause for most FIILs could not be identified; however, when it was identified, it was most commonly bacterial and typically Clostridium spp or Salmonella spp, which could be useful information for practitioners when evaluating and managing horses and other equids with intestinal distress. In addition, results underscored the need for improved diagnostic procedures and strategies to determine underlying causes of FIILs in equids. Knowledge of the most common FIILs and their underlying causes may help in diagnosing and mitigating intestinal disease in equids.

Original languageEnglish (US)
Pages (from-to)455-462
Number of pages8
JournalJournal of the American Veterinary Medical Association
Issue number4
StatePublished - Feb 15 2020

ASJC Scopus subject areas

  • veterinary(all)


Dive into the research topics of 'Fatal intestinal inflammatory lesions in equids in California: 710 cases (1990-2013)'. Together they form a unique fingerprint.

Cite this