I have a 843 pound steer that wont gain weight. I have a friend raising him as a show steer. he is 3/4 beef 1/4 dairy. he is fed a grain ration from our local feed store its a beef grower grain they sell. he gets 16 pounds of grain a day and 2 flakes of grass and 1 flake of alfalfa a day. he eats all his feed but hasnt gained a pound in the last two weeks. he goes on and off feed real easy and when he was off feed he gained more weight. I gave a shot of ivomectin, vitamin shots, and probios. any help would be appreciated I fear he wont make weight for the show in july. he is in a 20x20 pen with another heifer.