Nutritional Management to reduce the risk of Gastric Ulcers

November 12, 2025
Gastric Ulcers - EGUS
Nutritional Management to reduce the risk of Gastric Ulcers
Back to basics feeding rules
Overview of Basic Feeding Rules
Reduce cereal & starch intake
Feedscoop of Saracen's Enduro Performance

Cereal and starch intake has been associated with an increased risk of EGUS in horses. Exceeding 2g/Kg body weight (BW) of starch intake per day was associated with a two fold increase in the likelihood of EGUS and feeding more than 1g/Kg BW of starch per meal was associated with a 2.6 fold increase in the likelihood of EGUS.

STARCH PER DAY EQUATION:

(Feed in grams/100) x Starch % of feed indicated on the label

Starch per day for RE-LEVE®-Mix when fed at 2kg (the recommended intake for a 500kg horse)

(2000 / 100) x 8 =160g of starch per day

It is recommended for 500kg horse with ulcers not to have more than 500g of starch per meal and no more than 1,000g per day

Look for feeds containing the BETA EGUS Approval Mark as these feeds will ensure you are staying below this starch threshold if fed at the recommended intake.

Forage

Horses should ideally be allowed consistent access to forage. If this is not possible because your horse is a good-doer NEVER feed less than 1.5% of the horse’s body weight on a dry matter basis as forage, and look at ways in which the forage being fed can be made to last longer, such as

  • Putting hay in a small holed haynet
  • Putting different haynets around the stable/field to encourage browsing behaviour
  • Giving the hay allowance spread throughout the day rather than one amount in the morning and one amount in the evening
  • Soaking hay to reduce the soluble carbohydrate content.
Hay Bale

Recent research by Husted 2009 showed that daytime forage deprivation causes ESGD whereas night-time starvation in the same horses does not. So using this information it seems appropriate to prioritise daytime forage over large haynets at night.

  • 80% forage between 7am and 7pm
  • 20% forage between 7pm and 7am

Food For Thought
Forage water dunking has been observed as a warning sign for squamous ulcers, it is thought that by dunking coarse forage it softens it and reduces the risk of mechanical damage to the stomach lining when it is digested.

More Articles of Interest


What Is Equine Gastric Ulcer Syndrome? [link]

EGUS is a general term that is used to describe ulcers in the stomach, however as our understanding of EGUS has evolved the syndrome can now be split into two separate diseases.


Risk Factors Associated With Gastric Ulcers [link]

Find out how feeding and management practices have been associated with a high prevalence of Equine Gastric Ulcer Syndrome (EGUS).


Clinical Sign Of Equine Gastric Ulcer Syndrome [link]

The clinical signs of EGUS can vary from horse to horse and can also be a reflection of that individual horse’s temperament.


Finding The Right Feed For Your Ulcer Prone Horse Or Pony [link]

We work closely with other experts in nutrition, research, and veterinary science so that we can formulate feeds for all horses and ponies prone to EGUS.


Historical Review Of Gastric Ulcers [link]