A pit bull puppy, according to PitBulls.org, should be fed a high-quality diet consisting of 34 to 40 percent protein, 14 to 17 percent fat and 20 percent or less of carbohydrate. In addition, the puppy food should contain only 1.1 to 1.5 percent calcium.
Because they are large-breed dogs, pit bulls need to have carefully balanced diets so that skeletal diseases do not result. High levels of quality protein ensure that pit bull puppies grow strong bones and develop a robust immune system, while smallish amounts of fat keep pups from growing too fast and developing skeletal abnormalities. Pit bulls, like all dogs, do not easily digest carbohydrates, so it is best to keep the intake of this portion of the diet to a minimum.