This is my first post and i'd appreciate some advice
I recently brought my horse home from college for the first time for the summer (i got him while I was at school). He moved from Virginia to Michigan. I was told that Michigan grasses are richer than the ones in Virginia, but I figured he would adapt because he's lived his whole live outside. He's been in michigan for about 3 weeks. That being said, his barn's owner recently expressed concern that he was getting chubby and she mentioned founder as a possible problem because of the amount of grass in his field. I hadn't even thought that this would be an issue because he's 15 and so used to living outside with grass 24/7.
But I want to do what's best for him of course. Should I be worried and get him a grazing muzzle or something? I would hate to do that to him, but I don't want him to founder obviously. So I need some advice.
He's a 14.3 hand polish arabian if that helps any. Thanks so much for any help