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  • Title: The prevalence and anatomical distribution of equine gastric ulceration syndrome (EGUS) in 201 horses in Denmark.
    Author: Luthersson N, Nielsen KH, Harris P, Parkin TD.
    Journal: Equine Vet J; 2009 Sep; 41(7):619-24. PubMed ID: 19927578.
    Abstract:
    REASONS FOR PERFORMING STUDY: The prevalence (up to 93% in Thoroughbred racehorses) and severity of equine gastric ulceration syndrome (EGUS) have been correlated with the type of training and associated management practices. However, there have been few reports to confirm these findings in nonracehorses in Europe. OBJECTIVES: To describe the prevalence, anatomical distribution, severity and number of gastric ulceration lesions in a population of Danish pleasure horses; and to investigate differences for groups based on age, breed type and workload. METHODS: A total of 201 horses not in active race-training, age 7 months-27 years, were evaluated, representing 23 different stables from all 5 regions of Denmark. These horses were considered to be healthy by the owner and not on veterinary treatment for EGUS. Endoscopically observed ulcer lesion scores were based on the number present (0-4) and severity (0-5). The presence or absence of ulcers in the glandular and/or nonglandular regions of the stomach was recorded and which site the most severe ulcers were found. RESULTS: The prevalence of EGUS severity score > or = 2 was 53%. The most severe lesions were commonly observed at the margo plicatus. Although older horses were not more likely to be affected by clinically significant EGUS they were more likely to have lesions in both the glandular and nonglandular regions. Differences in location of EGUS lesions were identified in different age groups, breed types and in horses exposed to different levels of work. CONCLUSION AND POTENTIAL RELEVANCE: This study confirms that gastric ulceration can be prevalent in a group of apparently clinically normal horses, not in intensive work. Further investigation of reasons for differences in EGUS location between different populations may aid toward the development of novel preventive measures.
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