Why does my horse not eat the grain he has ate his whole life?

Answer 1

most of the time when a horse stops eating it's either because he as mouth pain , or the grain you got may be moldy , and if he has mouth pain he could have a ulcer from his teeth being to long and he needs to have a float done by a vet .

Answer 2

My mare did the same thing. She had "woman" issues. She was very young, and didn't understand the hormonal changes going on. She would stop eating her grain but continue eating her hay and drink plenty. Her teeth were great and she was in wonderful health, but she wasn't eating. A couple days would go by and then she would start up again. She's got Ovarian Colic. So it happens frequently, but has slowed since she's gotten older now.
My other experience with no grain eating horses is my weanling. He started with small amount of diarrhea and then got worse. He just needed deworming. So, have you done that lately?
I would go with that, and if you horse doesn't start eating grain in a couple days, and you've checked his teeth, then I would have a vet come out to look the horse over.

Answer 3

Has the mill changed the formula? Have his teeth become unevenly worn. What does he eat? Hay, grass? All are tips to the problem. He may need to have his teeth floated(filed by the vet or an equine dentist) often needs to be done as they age.

Answer 4

Have you checked his teeth? It might be alittle sharp and needs rasping.
Or if the grain company changed something in it and he doesn't like it or, maybe he's just tired of it which i don't think he is

Answer 5

I would get his teeth checked. That might be the problem.

Answer 6

maybe it is a change in you riding him. maybe he wants change. my horse did that to then we gave her unbeatable and mix it with her old stuff and she gulps it down.