I agree with Barn A.
Regarding weight gain and ruling out ulcers, here is a picture of my gelding when he was an anxious, hot mess due to untreated ulcers. He never lost weight, but he sure lost his mind there for a while! Started treating without scoping and he’s been back to his calm, cool self ever since (a few years now).
Interesting…I’ve always equated ulcers with weight loss. He’s actually put on about 150lbs in the 6 weeks he’s been at this barn. As much as I can’t stand the turnout situation, they do feed very good hay and he has it in front of him all the time. I have a 30 day supply of Ulcergard, so I’ll be sure to give him the full month and just let him roam around at the new place until he’s hopefully back to his old self.
Just another confirmation for barn A - my horses are so much more active in their “big” (3 acre) pasture than they are in their “small” (1 acre) pasture - so much that they lost nighttime access to the big pasture when we discovered that they were having midnight drag races .