Associations between age or sex and prevalence of XXXX in Standardbred racehorses in training.

@entity1066 @entity1641 @entity2275
OBJECTIVE: To determine associations between age, sex, or medical treatment and prevalence and severity of @entity2275 in Standardbred racehorses in training. DESIGN: Cross-sectional study. ANIMALS: 224 Standardbred racehorses in training. PROCEDURE: Gastroscopy was performed on each @entity1641 , and mucosal @entity1066 was graded from 0 (normal mucosa, no lesions) to 3 (extensive, often coalescing, lesions with areas of deep @entity1066 ). Associations between age, sex, or treatment and prevalence and severity of @entity1066 were evaluated. RESULTS: Prevalence of @entity2275 was 87%. Although there was little association between age and prevalence of @entity1066 , there was an association between age and severity of @entity1066 . Most 2-year-old @entity1641 (57.7%) had an @entity1066 score of 0 or 1. In all other age groups, most (58% to 82.61%) of @entity1641 had an @entity1066 score of 2 or 3. Although overall prevalence of @entity1066 was comparable among sex groups, the relative risk for @entity2275 increased with age in castrated males, whereas it decreased in females and sexually intact males. CONCLUSIONS AND CLINICAL RELEVANCE: Gastric @entity1066 is common in Standardbred @entity1641 in race training. Severity is higher in @entity1641 > or = 3 years of age than in 2-year-old @entity1641 . Relative risk for @entity1066 increases with age in castrated males.
