Cottonseed hulls have been used extensively in cattle rations as a source of roughage; the content in the ration is usually gradually lowered until the desired amount of concentrate is being consumed. In this study wheat bran was compared with cottonseed hulls for roughage. Since the question whether either feed was necessary arose, a third treatment was added where the heifers were turned directly on the self-feeder, in addition to the concentrate mixture in the self-feeder.