Fig. 4. Trends in costs of additional average daily gain (ADG) from supplementation with ground corn at rates of 0.45, 1.35, and 2.25 kg steer^-1 d^-1 over a range of corn costs. Corn costs that are equal or lower than points in trend lines were statistically lower (P 0.05) than break-even costs for low [$1.32 kg^-1 body weight ($0.60 lb^-1 body weight)], intermediate [$1.76 kg^-1 body weight ($0.80 lb^-1 body weight)], and high [$2.20 kg^-1 body weight ($1.00 lb^-1 body weight)] cattle selling prices. SEM, standard error of the mean.