Analyze Diet
Equine veterinary journal. Supplement1989; (7); 68-72; doi: 10.1111/j.2042-3306.1989.tb05659.x

Gastric ulcers in horses: a comparison of endoscopic findings in horses with and without clinical signs.

Abstract: Gastroendoscopic examinations were performed on 187 horses, ranging from one to 24 years. Eighty-seven horses had clinical problems including chronic, recurrent colic for seven or more days (25), one or more episodes of colic within the previous seven days (13), or acute colic (10), diminished appetite (53), poor bodily condition (40), and/or chronic diarrhoea (9). One hundred horses that had no signs of gastrointestinal problems were examined as part of a gastroendoscopic survey. Lesions observed in the squamous fundus, squamous mucosa adjacent to the margo plicatus along the greater curvature, glandular fundus, and the squamous mucosa along the lesser curvature were scored on a scale of 0-4, with 0 representing no lesions and 4 representing the most severe lesions. The mean endoscopic scores for the squamous fundus, margo plicatus and lesser curvature were significantly greater (P < 0.001) in horses with clinical signs than those without signs. This was because of the greater number of horses with lesions in the symptomatic group (80/87) compared to those without signs (52/100), and the greater severity of lesions in the horses with clinical signs. Of the horses, 74 were in race training. There was a significantly (P < 0.01) greater prevalence and severity of lesions at all sites except the glandular fundus in horses in training compared to those not in training, and in the horses in training with clinical signs (n = 37) compared to those in training without clinical signs (n = 37).
Publication Date: 1989-06-01 PubMed ID: 9118110DOI: 10.1111/j.2042-3306.1989.tb05659.xGoogle Scholar: Lookup
The Equine Research Bank provides access to a large database of publicly available scientific literature. Inclusion in the Research Bank does not imply endorsement of study methods or findings by Mad Barn.
  • Comparative Study
  • Journal Article
  • Research Support
  • Non-U.S. Gov't

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The research article studies the occurrence and severity of gastric ulcers in horses, comparing those with clinical signs of gastrointestinal issues to those without any apparent issues.

Research Method

  • The study involved gastroendoscopic examinations of 187 horses aged between one and 24 years. These screenings involved inspecting the internal lining of the horse’s stomach for signs of gastric ulcers.
  • Among the horses, 87 of them had various clinical signs including chronic, recurrent, or acute colic, reduced appetite, bad physical condition, or chronic diarrhea. These horses made up the group with gastrointestinal issues.
  • The remaining 100 horses showed no signs of gastrointestinal problems and were part of a independent gastroendoscopic survey. These comprised the group without clinical signs.

Scoring the Severity of Lesions

  • The researchers assessed the severity of lesions found in various parts of the horse’s stomach such as the squamous fundus, margo plicatus, glandular fundus, and the lesser curvature.
  • A grading scale from 0 to 4 was used to score the lesions, with 0 representing no lesions and 4 representing the most severe lesions.

Findings

  • The mean scores for the squamous fundus, margo plicatus, and the lesser curvature were significantly higher in horses with clinical signs than those without. This suggests that horses with clinical signs had more severe gastric lesions.
  • There were also more horses with lesions in the symptomatic group than those without signs. Among the 87 horses with clinical signs, 80 had lesions, whereas amongst the 100 horses without signs, only 52 had lesions.

Impact of Training

  • The study found that among the 74 horses in race training, there was a significantly greater prevalence and severity of lesions at all examined sites except the glandular fundus. This indicates that training can exacerbate existing gastric lesions or make horses more prone to developing one.
  • Out of the 37 horses in training, further differences were found between those displaying clinical signs (indicating gastrointestinal issues) and those without clinical signs. Gastrointestinal problems were more frequent and severe in training horses that displayed clinical signs.

Cite This Article

APA
Murray MJ, Grodinsky C, Anderson CW, Radue PF, Schmidt GR. (1989). Gastric ulcers in horses: a comparison of endoscopic findings in horses with and without clinical signs. Equine Vet J Suppl(7), 68-72. https://doi.org/10.1111/j.2042-3306.1989.tb05659.x

Publication

NlmUniqueID: 9614088
Country: United States
Language: English
Issue: 7
Pages: 68-72

Researcher Affiliations

Murray, M J
  • Marion duPont Scott Equine Medical Center, Virginia-Maryland Regional College of Veterinary Medicine, Leesburg 22075, USA.
Grodinsky, C
    Anderson, C W
      Radue, P F
        Schmidt, G R

          MeSH Terms

          • Animals
          • Colic / physiopathology
          • Colic / veterinary
          • Diarrhea / physiopathology
          • Diarrhea / veterinary
          • Endoscopy, Gastrointestinal / methods
          • Endoscopy, Gastrointestinal / veterinary
          • Gastric Mucosa / pathology
          • Horse Diseases / epidemiology
          • Horse Diseases / pathology
          • Horse Diseases / physiopathology
          • Horses
          • Pain / physiopathology
          • Pain / veterinary
          • Prevalence
          • Severity of Illness Index
          • Stomach / pathology
          • Stomach Ulcer / pathology
          • Stomach Ulcer / physiopathology
          • Stomach Ulcer / veterinary
          • Weight Loss / physiology

          Citations

          This article has been cited 22 times.
          1. Frippiat T, Bonhomme M, Dyson S, Votion DM. Evaluation of Owner-Reported Clinical Signs and Fecal Occult Blood Tests as Predictors of Equine Gastric Ulcer Syndrome in Competition Dressage Horses. J Vet Intern Med 2025 Nov-Dec;39(6):e70248.
            doi: 10.1111/jvim.70248pubmed: 41055229google scholar: lookup
          2. Willette J, Guinn A, Munsterman A. Primary Jejunal Impactions Resolved via Exploratory Celiotomy in Six Horses: 2017-2023. Animals (Basel) 2025 Aug 12;15(16).
            doi: 10.3390/ani15162363pubmed: 40867692google scholar: lookup
          3. Sykes B, Lovett A. Can All Behavioral Problems Be Blamed on Equine Gastric Ulcer Syndrome?. Animals (Basel) 2025 Jan 22;15(3).
            doi: 10.3390/ani15030306pubmed: 39943076google scholar: lookup
          4. Guerrero JLS, Brito PHS, Ferreira MA, Arantes JA, Rusch E, Oliveira BVDS, Velasco-Bolaños J, Carregaro AB, Dória RGS. Evaluation of Gastric pH and Gastrin Concentrations in Horses Subjected to General Inhalation Anesthesia in Dorsal Recumbency. Animals (Basel) 2024 Apr 15;14(8).
            doi: 10.3390/ani14081183pubmed: 38672331google scholar: lookup
          5. Luthersson N, Þorgrímsdóttir ÚÝ, Harris PA, Parkin T, Hopster-Iversen C, Bennet ED. Risk Factors for Equine Gastric Ulcer Syndrome Incidence in Adult Icelandic Riding Horses. Animals (Basel) 2023 Nov 14;13(22).
            doi: 10.3390/ani13223512pubmed: 38003130google scholar: lookup
          6. Ferlini Agne G, May BE, Lovett A, Simon O, Steel C, Santos L, Guedes do Carmo L, Barbosa B, Werner LC, Daros RR, Somogyi AA, Sykes B, Franklin S. Horse Grimace Scale Does Not Detect Pain in Horses with Equine Gastric Ulcer Syndrome. Animals (Basel) 2023 May 12;13(10).
            doi: 10.3390/ani13101623pubmed: 37238054google scholar: lookup
          7. Kranenburg LC, van der Poel SH, Warmelink TS, van Doorn DA, van den Boom R. Changes in Management Lead to Improvement and Healing of Equine Squamous Gastric Disease. Animals (Basel) 2023 Apr 28;13(9).
            doi: 10.3390/ani13091498pubmed: 37174535google scholar: lookup
          8. Ermers C, McGilchrist N, Fenner K, Wilson B, McGreevy P. The Fibre Requirements of Horses and the Consequences and Causes of Failure to Meet Them. Animals (Basel) 2023 Apr 20;13(8).
            doi: 10.3390/ani13081414pubmed: 37106977google scholar: lookup
          9. Vokes J, Lovett A, Sykes B. Equine Gastric Ulcer Syndrome: An Update on Current Knowledge. Animals (Basel) 2023 Apr 5;13(7).
            doi: 10.3390/ani13071261pubmed: 37048517google scholar: lookup
          10. Lo Feudo CM, Stucchi L, Conturba B, Stancari G, Zucca E, Ferrucci F. Equine Gastric Ulcer Syndrome affects fitness parameters in poorly performing Standardbred racehorses. Front Vet Sci 2022;9:1014619.
            doi: 10.3389/fvets.2022.1014619pubmed: 36504861google scholar: lookup
          11. Albanese V, Munsterman A, Klohnen A. Prevalence of Gastric Ulceration in Horses with Enterolithiasis Compared with Horses with Simple Large Intestinal Obstruction. Vet Sci 2022 Oct 25;9(11).
            doi: 10.3390/vetsci9110587pubmed: 36356064google scholar: lookup
          12. Hewetson M, Tallon R. Equine Squamous Gastric Disease: Prevalence, Impact and Management. Vet Med (Auckl) 2021;12:381-399.
            doi: 10.2147/VMRR.S235258pubmed: 35004264google scholar: lookup
          13. Kitaura T, Sato F, Hada T, Ishimaru M, Kodama R, Nambo Y, Watanabe G, Taya K. Influence of exercise and emotional stresses on secretion of prolactin and growth hormone in Thoroughbred horses. J Equine Sci 2021 Jun;32(2):49-53.
            doi: 10.1294/jes.32.49pubmed: 34220271google scholar: lookup
          14. Munsterman AS, Dias Moreira AS, Marqués FJ. Evaluation of a Chinese herbal supplement on equine squamous gastric disease and gastric fluid pH in mares. J Vet Intern Med 2019 Sep;33(5):2280-2285.
            doi: 10.1111/jvim.15603pubmed: 31441559google scholar: lookup
          15. Sykes BW, Bowen M, Habershon-Butcher JL, Green M, Hallowell GD. Management factors and clinical implications of glandular and squamous gastric disease in horses. J Vet Intern Med 2019 Jan;33(1):233-240.
            doi: 10.1111/jvim.15350pubmed: 30499188google scholar: lookup
          16. Banse HE, MacLeod H, Crosby C, Windeyer MC. Prevalence of and risk factors for equine glandular and squamous gastric disease in polo horses. Can Vet J 2018 Aug;59(8):880-884.
            pubmed: 30104780
          17. Hewetson M, Sykes BW, Hallowell GD, Tulamo RM. Diagnostic accuracy of blood sucrose as a screening test for equine gastric ulcer syndrome (EGUS) in adult horses. Acta Vet Scand 2017 Mar 11;59(1):15.
            doi: 10.1186/s13028-017-0284-1pubmed: 28284214google scholar: lookup
          18. Sykes BW, Hewetson M, Hepburn RJ, Luthersson N, Tamzali Y. European College of Equine Internal Medicine Consensus Statement--Equine Gastric Ulcer Syndrome in Adult Horses. J Vet Intern Med 2015 Sep-Oct;29(5):1288-99.
            doi: 10.1111/jvim.13578pubmed: 26340142google scholar: lookup
          19. Nishita T, Anezaki R, Matsunaga K, Orito K, Kasuya T, Sakanoue H, Matsunaga A, Arishima K. Measurement of Carbonic Anhydrase I and II Isozymes in Feces as a Marker of Occult Blood in Horses with Intestinal Tract Bleeding. J Equine Sci 2013;24(4):57-62.
            doi: 10.1294/jes.24.57pubmed: 24834003google scholar: lookup
          20. Fink C, Hembes T, Brehm R, Weigel R, Heeb C, Pfarrer C, Bergmann M, Kressin M. Specific localisation of gap junction protein connexin 32 in the gastric mucosa of horses. Histochem Cell Biol 2006 Mar;125(3):307-13.
            doi: 10.1007/s00418-005-0047-3pubmed: 16205941google scholar: lookup
          21. Doucet MY, Vrins AA, Dionne R, Alva R, Ericsson G. Efficacy of a paste formulation of omeprazole for the treatment of naturally occurring gastric ulcers in training standardbred racehorses in Canada. Can Vet J 2003 Jul;44(7):581-5.
            pubmed: 12892289
          22. Murray MJ. Equine model of inducing ulceration in alimentary squamous epithelial mucosa. Dig Dis Sci 1994 Dec;39(12):2530-5.
            doi: 10.1007/BF02087686pubmed: 7995175google scholar: lookup