Courtesy of my ethics textbook...

"Most people believe, in a vague way, that while the slaughterhouse might be an unpleasant place, animals raised for food are otherwise treated well enough. But, Singer points out, nothing could be further from the truth. Veal calves, for example, spend their lives in pens too small to allow them to turn around or even to lie down comfortably--but from the producers' point of view, that is good, because exercise toughens the muscles, which reduces the "quality" of the meat; and besides, allowing the animals adequate living space would be expensive. In these pens, the calves cannot perform such basic actions as grooming themselves, which they naturally desire to do, because there is not room for them them to twist their heads around. The calves clearly miss their mothers, and like human infants, they want something to suck--they can be seen trying vainly to suck the sides of their stalls. In order to keep their meat pale and tasty, they are fed a liquid diet deficient in both iron and roughage. Naturally, they develop cravings for these things. The calves' craving for iron becomes so strong that, if allowed to turn around, they will lick at their own urine, although calves normally find this repugnant. The tiny stalls, which prevent the animals from turning, solve this "problem." The craving for roughage is especially strong, since without it the calves cannot form a cud to chew. They cannot be given any straw for bedding, since the animals would be driven to eat it, which would affect the meat."