I turned my herd (10 head) into winter pasture (mostly fescue) a month or so ago. There is plenty of grass to go around and it should last awhile. What I would like to know is as long as there is not snow or ice covering the ground, do I still need to feed hay? I have been feeding and they have been going thru 2-4x4 round bales a week. Can they get the nutrients they need on grass, along with the loose mineral and protein tub I have out for them?