This is my first winter with horses out here, I've got two QH geldings in a paddock together, 14-15hhs roughly 1,000lbs, and a 15.2hh paint gelding in his own pen who we've been working on upping his weight this fall. The hay we feed is a grass/alfalfa mix that's a bit heavier on the alfalfa side.
Currently the paint is on 20lbs of hay, a couple lbs of Boost (were told to get it by our trainer to help with his weight, will probably stop with it once this bag is gone), a handful of sweet cob and supplements daily. He is not my horse but I'm close with his owner and could convince her to adjust if needed.
The other two boys are on 18lbs of hay a day. I'm out of the supplement I've been using with my gelding and looking for the best route to take with him. I'm leaning towards a good quality supplement with a good grain or beet pulp. He's an easy keeper so I don't need to keep is weight on.
I'm in Montana and they're outside 25/7. It's already below freezing and just going to get colder. They all get fed 3 times a day, now that the temps are low they've been getting a few lbs extra hay depening on just how cold it is. I would love to be able to give them free choice but I cannot move the large bales. When it gets really cold out are they going to be fine with 3-4 weighed out feedings a day? I really don't want to dump a wheelbarrow full of loose hay for fear of wasting a lot due to the wind, but if that's better for them I will do that. It does often get below zero out here, and I want to make sure they have enough hay to keep them warm and busy during the worst days.