I have 30 head on a 3 acres until i finish fixing a stretch of fence where calves have gotten out. When the fence is done I'll put them out on pasture but in the mean time I have to feed corn and minerals. I need to know how much to feed them. They're average weight is 300lbs. I currently give them 60 pounds of grain and 50lbs of coastal hay every day and it's all gone in 20 minutes. Should I feed more grain or more hay or more of both?