Due to rising costs of conventional feedstuffs, more focus has been put on feeding byproducts from ethanol production or further processing of grains. The effects of using these feedstuffs on live animal performance, carcass traits and the economic benefits are still under investigation. The objective of this study was to investigate the effects of feeding combinations of self-fed byproducts and corn grain to yearling cattle on grazing pasture on their growth and carcass traits.