Equine Gastroscopy

Understanding Stomach Ulcers in Horses

Stomach ulcers are a common issue in horses, and very common in race horses, and are caused by damage from stomach acid and digestive enzymes.

These present with a variety of clinical signs such as:

• Weight loss or difficulty gaining weight.
• Poor appetite.
• Poor body condition.
• Impaired performance.
• Behavioural changes.
• Girthiness.
• Repeated bouts of colic.
• Dull coat.

Gastroscopy: The Gold Standard for Diagnosis

To accurately diagnose stomach ulcers, we use a video scope to examine the stomachs’ mucosa. This procedure not only identifies ulcers but also assesses their location and severity. It is important to not treat unnecessarily, so by identifying and diagnosing with precision, we can tailor treatment effectively. We have a covered and fenced yard in Kumeu offering the ability for overnight fasting (free of charge) before the procedure the following day. With prior arrangement, you can deliver your horse to us the night before, knowing that they will be ready for scoping in the morning. Less stress for you on the morning of the procedure!

We perform gastroscopy regularly at our Kumeu clinic, and also offer a mobile service at pre-approved and appropriately ‘vetted’ off-site stables.

Causes of Stomach Ulcers

Gastric ulceration in horses can occur in two forms:

• Squamous mucosa ulceration: Caused by increased exposure to acid.
• Glandular mucosa ulceration: Results from a failure of the protective mucus layer or disrupted blood flow, this is usually stress-related.

The glandular mucosa, responsible for acid secretion, has a thick mucus layer for protection, while the squamous mucosa is more delicate with a thinner mucus layer.

Preventive Management Tips for squamous ulceration

Given horses’ continuous gastric acid secretion due to their grazing nature, proper management is crucial. Here are some recommendations:

• Ensure continuous access to high-quality forage.
• Add roughage, such as chaff, to all meals.
• Use lucerne chaff for its high calcium content, which helps buffer acid.
• Split concentrate rations into two feeds.
• Incorporate corn oil or rapeseed oil (50-100mls once or twice a day) to reduce acid production and enhance the glandular mucosa barrier function.
• Feed 1-2L molasses-free chaff within 30 minutes of exercise to form a protective ‘mat’ and reduce acid splashing to the squamous mucosa.

For more information or to schedule a gastroscopy, contact our Kumeu clinic at 09 412 9016. Let us help your horse achieve optimal health and performance.