Twenty one adult horses without clinical signs were used for gastroscopic study. High prevalence (47.6%) of gastric ulceration was observed, especially adjacent to the margo plicatus, although with low severity. Mild or moderate gastritis of the glandular mucosa was an usual finding in these horses submited to fasting for gastroscopic examination. The occurrence of Habronema sp. was high (28.6%), and caused chronic catarrhal gastritis.
gastric ulcers; equine; gastroscopy