09/03/2026
TAKE CARE TURNING HORSES OUT ON GOOD GRASS - GRADUAL IS THE KEY
All dietary changes should be made gradually, especially changes in forage.
With some owners now turning out on rested pasture and grass getting growing, this is a timely reminder.
Spring grass can cause gut disturbance due to the rapid change in nutrients the horse's gut is exposed to when they're turned out onto fresh fields of good grass.
It's not sugar getting into the caecum that causes this - sugar is thoroughly digested in the small intestine before the caecum. Sugar always seems to get the blame!!
What causes the problem is the rapid change to a different type of forage which is high in fructan (a highly fermentable carb) and much lower in cellulose (structural fibre) than hay. Both these can cause rapid changes in the gut microbiome, which can lead to large intestine acidosis, gas, and digestive disturbance.
There's no need to get your horse's faeces tested (it's quite clear what the problem is so don't waste £100s to be told what you already know), to panic about ulcers or indeed panic about anything else (that's not good for you or your horse):
1. Introduce new grass growth gradually and maintain hay intake as you change over
2. If you haven't done this, take a step back and readjust (you may need to strip graze, use a grazing muzzle or share a turnout plan with friends)
3. Consider feeding a good gut supporting supplement but ONLY after you've altered the diet back to closer to how it was and started more gradual change
4. Understand that your horse may be tight/irritable just as would be expected from a gut disturbance
5. Speak to your vet if you suspect a medical issue with your horse such as ulcers or gut inflammation (please don't self- or social-media-diagnose or treat because you may miss something important or get it wrong)
6. Don't believe everything you read on social media 😊
Feel free to share; thank you 🐴🍏