I completely agree with everything that has been said...yes you can maintain cattle on corn, oats, and hay...but you cant do that and get good gains. Another thing we dont know about your feed...are you feedinge rolled or flaked corn and oats, or are you feeding them whole. Even if you use the T-Flyer to suplement this, the grains need to be ground, flaked, or rolled to break the seed covering. This is why you notice a lot of corn and oats in the manure of animals that are fed whole corn or whole oats. And all the nutrition is on the inside, or the "germ", of the seed. Rolling, grinding, or flaking breaks that seed covering and allows the digestive system to actually digest and utilized the feed source. Also you mention nothing about vitamin and mineral supplements? The best corn and oats out there wont provide the vitamins and minerals needed which are essential to not only having good growth, but a healthy looking animal. Vitamin and mineral deficiancies could also add to that pot gutted appearance. When I am growing out a show calf I generally feed a pre mixed complete feed or have a mill make one for me, both work great, but in either case I expect my animals complete nutritional needs to be met by the feed, that way I only have to feed enough hay to provide a little roughage in the diet. This means the animal consumes more of the feed that is going to give me high rates of quality gain, and doesnt fill themselves up on hay. If you cant switch get the farmer to buy a complete feed, at least try to make sure he is feeding the right types of grains, try to get him to add something like SBM for a boost of protein, find a good complete vitamin and mineral to mix with it, and try to get him to let you mix some molasses or something to make the feed more palatable and hold it all together. Then, LIMIT HIS HAY INTAKE and POUR THE FEED TO HIM. I have dealt with a lot of cattle, I am by no means an expert, and I know that shorthorns can be a little smaller and later maturing than some. But like everyone siad, this steers weight for his age and the amount of time he as been on feed is WAYYY behind. Regardless of breed, genetics, color, anything, he is definately at a stage of playing catch up and he is gonna have to be pushed. Wining a carcass class and excelling in the showring are 2 different ballgames, I could see this steer doing ok in carcass if he gets a little more cover, but he is in no way show ring ready and like others have said. he wont get there unless his diet changes.