North Dakota State Univ. scientists allotted 144 crossbred steers (985 lb) to one of three dietary treatments: 1) heavy test wt. corn (53.7 lb/bu; HTC); 2) medium test wt. corn (46.9 lb/bu; MTC); 3) low test wt. corn (39.1 lb/bu; LTC). Diet was composed of 81% dry-rolled corn, 5% beet pulp, 5% mixed hay, add 9% supplemental ingredients. Steers were slaughtered after 66 or 82 days on feed. There were no significant differences among treatments for final wt. or avg. daily gain. LTC steers tended to have higher daily dry matter intake than HTC steers (27.3 vs. 25.4 lb). However, there was no effect of treatment on feed conversion which averaged 5.55 lb/lb. Apparent net energy for maintenance (NEm) and gain (NEg) were similar among treatments. At slaughter, carcass wt. and marbling score did not differ among treatments. LTC carcasses tended to have smaller ribeyes than either MTC or HTC steers (12.74 vs. 13.49 and 13.46 sq. in., respectively). Treatments did not differ in backfat thickness (0.45 in.) or KPH fat (1.96%). However, LTC carcasses tended to have greater yield grades compared to MTC or HTC carcasses (3.04, 2.80, and 2.73, respectively. The authors concluded that, although those steers fed the LTC diet had greater dry matter intake, LTC is a suitable substitute for HTC.