Originally Posted by nvr2many
A difference in what? Digesting??
Yes, if the ulcers are bad enough. Humans with ulcers can have trouble eating certain types of food and digesting it.
Or it could be something else health-related. None of my horses get grain but they do get supplements.
If someone is off, I will either see an inordinate amount of hay in their manure or they haven't finished their hay from the night before.
I'm not saying that's your horse's issue; just saying it's something else to think about