It really depends on the quality of grass in your pasture, for instance in most parts of Florida people feed hay year round because the grass is not very rich with nutrients. Here in TN the grass quality is better, but we still feed hay. Keep in mind how long your horse gets to graze every day. By the way you described your pasture, doesnt sound like a 'lush, full of nutrients' pasture. I would say keep feeing him hay. If you have the time, you can always fertilize to improve the quality of grass you have.
If your going to cut anythign out of a horses diet is should be grain. They need all the forage they can get. Hope that was some kinda helpful
~If horseback riding was easy they would call it football.~
Last edited by Tamibunny; 05-07-2011 at 04:49 PM.