Kenny, will you explain how you know this? I feed hay twice a day to my two cows. I move the trough each time to distribute the poop in my 2.8 acre pasture and they leave very little waste. My 1,776 lb overweight cow needs to lose 200 lbs, I think she has lost some weight but how am I really going to know. I get worried I'm starving her. With the 28 degree weather coming, I have fresh straw in a 20x10 open stable and I supplement my yearling with grain still. I'm likely going to do that until the really cold weather is gone. I would love to know I'm feeding them the right amount.