Sorry meant to put in this section:
What I mean is I have always gived my horse hay daily, picked some off of the round bail. I recently made it to where he can go get some as he pleases from the bail. The hay went from lasting about 2 months to lasting one month. I just picked up another horse the other day and I notice them having the hay scattered more. Though there is plenty on the ground, they still keep getting it from inside the hay shed as well. I was going to put a chain link fence, piece of fence over the area they can stick their heads in. I will be able to close it when I want and let them eat all that's on the ground first at least.
I guess what I mainly wanted to know because it seems even thogh they have a large pasture, they will eat the hay more frequently?