Equine Ulcer Prevention Using Nutrition and Holistic Care Strategies
Equine Gastric Ulcer Syndrome (EGUS) remains one of the most frequently diagnosed digestive disorders in modern horses. Research-supported nutrition strategies, particularly forage-first approaches, offer substantial protective benefits against gastric acid exposure and microbial disturbances. Holistic barn management adds essential environmental stability, reducing stress-linked risks. This article synthesizes peer-reviewed evidence from gastrointestinal physiology, forage composition studies, microbiome trials, and real-world management research to outline a structured, practical framework for preventing ulcers suitable for equine professionals, veterinary teams, and nutrition-focused enterprises.
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Keywords: equine ulcer prevention, forage-first diet for horses, low-starch diets for horses, equine gastric ulcer syndrome, lucerne forage gastric health, equine microbiota stability, pasture turnout gastric health, fibre composition horses, holistic barn management horses, equine squamous ulcers, gastric acid buffering forage, hindgut microbiota horses, ulcer prevention protocols horses
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Table of Contents
Forage-Forward Prevention: A Practical Foundation
Equine gastric health relies heavily on a feeding pattern that matches natural grazing behavior. Continuous forage intake supports more stable gastric pH, steadier fermentation patterns, and smoother passage rates. These principles are particularly relevant for horses experiencing confinement, training, or increased energy demands.
Digestive disorders often interact with other gastrointestinal conditions. For readers seeking broader context on equine gut health, this resource offers additional insight: Equine Colic: Causes, Symptoms, Treatment, and Prevention Every Horse Owner Must Know.
Core Physiology Behind Gastric Vulnerability
The equine stomach secretes acid continuously. Squamous regions lack protective mucus, leaving them vulnerable when exposed to unbuffered acid. Research reviews such as Hesta & Costa (2021) highlight the importance of slow-feed fiber strategies in modulating acid distribution and contact time. Van Den Boom (2022) further documents links between feeding intervals, gastric fill levels, and severity of squamous lesions.
High-Risk Feeding Practices Linked With EGUS
Several controlled studies highlight management patterns strongly associated with ulcer development.
Low roughage intake
Large concentrated meals
High starch and non-structural carbohydrates
Infrequent feeding periods
Restricted turnout
A Belgian cohort analysis by Galinelli et al. (2019) identified high sugar-starch diets and limited roughage as leading risk factors. Reviews from Reese & Andrews (2009) and Andrews, Larson & Harris (2017) provide additional evidence on grain load effects and meal size impacts.
Forage-First Diet Strategies
A forage-first strategy prioritizes acid buffering, saliva production, and stable gastric fill. This approach aligns strongly with the core physiological needs described in multiple peer-reviewed nutrition studies.
Forage Maturity and Fiber Composition
Fiber composition influences fermentation patterns, microbial community structure, and nutrient release rates. Muhonen, Sadet-Bourgeteau & Julliand (2021) demonstrated that differences in forage maturity alter caecal and colonic microbial activity, highlighting the importance of balanced neutral detergent fiber (NDF) and acid detergent fiber (ADF).
Readers seeking broader forage-type background material may explore: Silage, Hay, Grass, Legumes, and Concentrates: Their Role in a Balanced Ruminant Diet.
Lucerne (Alfalfa) Buffering Properties
Multiple trials evaluating lucerne-based products—such as FiberProtect® and FiberEdge®—demonstrated positive buffering effects and reduced EGUS scores. Key sources include Stowers et al. (2013), which document improved protection of the squamous region due to lucerne’s high calcium and protein levels.
Low-Starch Diet Protocols
Lower starch intake supports a more stable gastric pH and improved faecal microbial composition. Irving et al. (2025) reported lower gastric disease scores in performance horses adapted to low-starch dietary modifications, reinforcing the value of fiber-dominant rations.
Microbiome Stability During Dietary Transitions
Diet transitions influence fermentation patterns and microbial composition. Zhu et al. (2021) demonstrated distinct microbial profiles between hay, silage, and fresh pasture. Fernandes et al. (2021) revealed that faecal microbiota show resilience after abrupt forage shifts, though temporary fluctuations in microbial diversity justify measured transition strategies.
A gradual, structured transition supports consistent fermentation and minimizes disruption.
Holistic Barn Management Approaches
Environmental and management decisions significantly influence EGUS incidence.
Turnout and Natural Feeding Rhythms
Pasture access supports steady forage intake and reduces confinement-related stress. Lúthersson et al. (2022) documented higher ulcer rates when Icelandic horses transitioned from extensive pasture to training stables, highlighting environmental stress as a significant contributor.
Training Transitions and Stress Reduction
Management adjustments such as controlled workload increments, social stability, and reduced confinement support gastric integrity. Kranenburg et al. (2023) reported improvements in ulcer healing when management changes were introduced, underscoring the value of holistic approaches.
For broader context on horse management within food production systems, see: From Pasture to Plate: How Horse Disease Management Plays a Key Role in Food Security.
Supportive and Holistic Therapies
Holistic support includes nutraceuticals that influence buffering capacity, mucosal health, or microbial balance.
For readers comparing feed and supplement quality standards, this internal guide offers additional insight: How to Choose the Right Pet Food: Understanding Labels and Ingredient Quality.
💡 Owner Tip: Simple steps that strengthen preventive management. |
Forage frequency: Continuous roughage supports steadier gastric fill and natural buffering. Lucerne inclusion: High calcium and protein levels support squamous-region protection. Low-starch feeding: A reduced starch load supports a more balanced fermentation. Slow-feed systems: Controlled intake aligns with grazing physiology. Gradual transitions: Stepwise adjustments support microbial stability. Consistent turnout: Environmental stability supports digestive resilience. |
FAQs About Equine Ulcer Prevention
What nutrition strategy supports gastric protection in performance horses?
High-fiber, low-starch feeding structures supported by studies from Irving et al. (2025) and Reese & Andrews (2009).
Which forage species deliver natural buffering effects?
How do abrupt forage transitions influence the hindgut microbiota?
Does structured turnout reduce the prevalence of gastric disease?
Studies such as Lúthersson et al. (2022) highlight turnout as protective due to reduced stress.
How does forage maturity influence fermentation?
Variable fiber fractions influence microbial activity, as documented in Muhonen, Sadet-Bourgeteau & Julliand (2021).
Holistic Strategies Strengthen Long-Term Gastric Health
An integrated approach—balancing forage-first nutrition, stable barn conditions, structured turnout, and evidence-supported supplements—provides a meaningful protective framework against EGUS. Continuous fibre access stabilizes gastric pH, lucerne-based forage supports natural buffering, and management consistency reduces stress-induced vulnerability. Evidence highlights the importance of thoughtful transitions and herd-level environmental oversight in sustaining digestive health across diverse equine populations.
💡 Free Forage-First Ulcer Prevention Checklist |
Download a one-page checklist for an easy-to-use, science-informed resource for daily barn routines. Download Now! |
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Veterinary clinics, nutrition companies, and agricultural brands seeking evidence-driven content may request a veterinary writing sample or commission a clinic-ready client education handout. Visit countryvetmom.com or contact Dr. Gaffud for Veterinary Writing Services. |
Disclaimer: This article offers general educational information based exclusively on published peer-reviewed research. It does not replace individual veterinary diagnosis, personalized dietary planning, or professional treatment recommendations. Clinical decisions require direct evaluation by a licensed veterinarian.
References
Andrews, F., Larson, C., & Harris, P. (2017). Nutritional management of gastric ulceration. Equine Veterinary Education, 29, 45–55. https://doi.org/10.1111/eve.12495
Buchanan, B., & Andrews, F. (2003). Treatment and prevention of equine gastric ulcer syndrome. The Veterinary Clinics of North America: Equine Practice, 19(3), 575–597. https://doi.org/10.1016/j.cveq.2003.08.012
Cipriano‐Salazar, M., Adegbeye, M., Elghandour, M., Barbabosa‐Pilego, A., Mellado, M., Hassan, A., & Salem, A. (2019). The dietary components and feeding management as options to offset digestive disturbances in horses. Journal of Equine Veterinary Science, 74, 103–110. https://doi.org/10.1016/j.jevs.2018.12.017
Elghandour, M., Reddy, P., Salem, A., Reddy, P., Hyder, I., Barbabosa‐Pliego, A., & Yasaswini, D. (2018). Plant bioactives and extracts as feed additives in horse nutrition. Journal of Equine Veterinary Science, 69, 66–77. https://doi.org/10.1016/j.jevs.2018.06.004
Fernandes, K., Rogers, C., Gee, E., Kittelmann, S., Bolwell, C., Bermingham, E., Biggs, P., & Thomas, D. (2021). Resilience of faecal microbiota in stabled Thoroughbred horses following abrupt dietary transition between freshly cut pasture and three forage-based diets. Animals, 11(9). https://doi.org/10.3390/ani11092611
Galinelli, N., Wambacq, W., Broeckx, B., & Hesta, M. (2019). High intake of sugars and starch, low number of meals and low roughage intake are associated with equine gastric ulcer syndrome in a Belgian cohort. Journal of Animal Physiology and Animal Nutrition. https://doi.org/10.1111/jpn.13215
Harris, P., & Shepherd, M. (2021). What would be good for all veterinarians to know about equine nutrition. The Veterinary Clinics of North America: Equine Practice, 37(1), 1–20. https://doi.org/10.1016/j.cveq.2020.11.001
Hesta, M., & Costa, M. (2021). How nutrition helps with gastrointestinal tract-based issues. The Veterinary Clinics of North America: Equine Practice, 37(1), 63–87. https://doi.org/10.1016/j.cveq.2020.12.007
Irving, J., Pineau, V., Shultz, S., Ter Woort, F., Julien, F., Lambey, S., & Van Erck-Westergren, E. (2025). Impact of low-starch dietary modifications on faecal microbiota composition and gastric disease scores in performance horses. Animals, 15. https://doi.org/10.3390/ani15131908
Jacobs, R., Gordon, M., Vineyard, K., Keowen, M., Garza, F., & Andrews, F. (2020). The effect of a seaweed-derived calcium supplement on gastric juice pH in the horse. Journal of Equine Veterinary Science, 95, 103265. https://doi.org/10.1016/j.jevs.2020.103265
Kranenburg, L., Van Der Poel, S., Warmelink, T., Van Doorn, D., & Van Den Boom, R. (2023). Changes in management lead to improvement and healing of equine squamous gastric disease. Animals, 13. https://doi.org/10.3390/ani13091498
Louie, E., Nieto, J., Wensley, F., Morgan, J., Finno, C., & Berryhill, E. (2023). Efficacy of the oral supplement, Equine Omega Complete, for the prevention of gastric ulcers. Journal of Veterinary Internal Medicine, 37, 2529–2534. https://doi.org/10.1111/jvim.16877
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Lúthersson, N., Þorgrímsdóttir, Ú., Harris, P., Parkins, T., & Bennet, E. (2022). Effect of moving horses from pasture into training on the incidence of equine gastric ulcer syndrome. Journal of the American Veterinary Medical Association, 1–9. https://doi.org/10.2460/javma.22.06.0263
Muhonen, S., Sadet-Bourgeteau, S., & Julliand, V. (2021). Effects of differences in fibre composition and maturity of forage-based diets on microbial ecosystems in equine digesta. Animals, 11. https://doi.org/10.3390/ani11082337
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Stowers, N., Waldron, L., Pryor, I., Hill, S., & O'Brien, J. (2013). The influence of two lucerne-based forage feeds, FiberProtect® and FiberEdge® on Equine Gastric Ulcer Syndrome in horses. https://doi.org/10.1017/jan.2013.5
Van Den Boom, R. (2022). Equine gastric ulcer syndrome in adult horses. The Veterinary Journal, 105830. https://doi.org/10.1016/j.tvjl.2022.105830
Zhu, Y., Wang, X., Deng, L., Chen, S., Zhu, C., & Li, J. (2021). Effects of pasture grass, silage, and hay diets on equine fecal microbiota. Animals, 11. https://doi.org/10.3390/ani11051330
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