Now this is a really good point. Cows really cant handle the corn in their diets. However, to me this only says that corn is not the optimal crop we should be subsidizing. If we subsidize some other crop that is healthier for cows and still has starches to be broken into sugars, that would be a better plan.Using corn as cattle feed is generally considered a bad thing, it's not digested properly. Most good beef cattle is grass-fed, if I remember correctly corn is used mainly on dairy cattle.