I have two 15 month old red angus steers. After about 2 months on grain, going from 6 lbs/day to 18 lbs/day of grain they stopped eating it. It's been cold and wet. They'll eat some of the grain but they use to run to eat it, now they'll stand there and watch you pour it and maybe sniff it and will eat some but won't clean it up. I've cut back to 9 lbs total and they still leave some. Any ideas?