My fat horse's pasture diet has changed, before she was getting near free choice, fresh grass, now she gets the grass that's been grazed over by a hard keeper first with no rest period, supplemented by some hay to keep her gut working if other horse has done a good job eating. Her weight is better since but no dramatic change. The thing is I never had any problems at all with her besides weight when she was on the green grass and she was on it during seasonal flushes and over a very wet, warm winter. Now if she goes on the green grass she gets very spooky, her hard feed which she was doing amazing on originally was designed for horses on HQ pasture that didn't need extra fat. Recently she's gotten stubborn rain scald, has a dry coat (she used to be so shiny!) and allergies all new. In the past she would get a few lumps when flies were out but they cleared up within a day, but in the last few months she been covered with welts and had runny eyes, thing did still clear up before I could call the vet out to be fair. I've been thinking she might be helped by a feed change to something with a higher vitamin a/e content to reflect the pasture diet change. I have a good mineral supplement I know at least won't affect her adversely so is worth a try and I feed her that with meadow chaff. If I add a tablespoon or so of molasses for taste, diluted with water, is that acceptable, or a terrible idea for a fat horse. Also any advice on what could be causing her skin issues or controlling a fat horses weight would be appreciated. If she doesn't show any improvement by end of week I'm calling a vet regardless but information is always a plus.