How does the role of stress play into ulcer development?
- Chip Kohser
- Jun 3
- 2 min read
Stress is a significant factor contributing to the development of gastric ulcers in horses. Both physical and psychological stressors can lead to the release of cortisol, a hormone that plays a crucial role in the 'fight or flight' response. This hormone reduces the production of prostaglandins, which are essential for protecting the stomach lining from acid. As a result, the stomach lining becomes vulnerable to ulceration.
Some Potential Causes of Physical Stress in Horses
Several factors can induce stress in horses, particularly those involved in performance activities. Physical stressors include intensive exercise, travel, and competition, while psychological stressors may involve stabling, isolation, and exposure to new environments or horses.
Ideas for Physical Stress Management in Horses
Increase Turnout Time: Maximize the time horses spend on pasture to reduce stress and allow natural grazing behaviors.
Consistent Routines: Maintain consistent feeding and exercise schedules to minimize stress. Consistent social groups for turnout can also help reduce social stress.
Pre-Exercise Feeding: Providing a small amount of alfalfa or hay before exercise can help prevent acidic gastric contents from splashing into the sensitive upper stomach area.
Minimize Transport and Competition Stress: During periods of transport or competition, try to maintain the horse's routine as much as possible and consider using gastro protectant supplements like our GI Equilizer paste if the horse has a history of ulcers.
Some Potential Causes of Psychological Stress in Horses
Equine socialization and environment is crucial for the well-being and development of horses. Psychological stress plays a significant role in the development of gastric ulcers in horses. This would be similar to anxiety in people. Here's a deeper overview of how any stress impacts ulcer formation in horses:
When horses experience stress, their bodies release cortisol, a hormone associated with the "fight or flight" response.
Cortisol has two key effects that promote ulcer formation:
- It reduces blood flow to the stomach lining
- It decreases mucus production in the stomach
With less blood flow, the stomach lining cells receive less nutrition and oxygen, making them more vulnerable to acid damage.
Reduced mucus production means the stomach lining has less protection against stomach acid.
