04/03/2026
Owners of horses with equine metabolic syndrome (EMS) have to be extremely cautious when it comes to feeding a diet that is too high in sugar (nonstructural carbohydrates or NSCs). Whether your horse is overweight or just carrying a few extra pounds* with EMS, there are a few rules of thumb you should follow when developing his diet.
• Feed hay with less than 10 to 12 percent NSC
• If needed, additional calories should come from fat sources, like a high-fat supplement
• Restrict access to pasture, particularly in the spring and fall when grasses are storing sugar in the leaves
• Avoid feeding grain, particularly ones that are high in sugar
• Fill in vitamin/mineral gaps in your horse's nutrition plan with a ration balancer
*It's a common misconception that every horse with EMS is obese! Some EMS horses are an appropriate weight or carrying just a few extra pounds.