Corn SH (20%, wt/wt) was prepared as described by Bauer et al. (1995) and stored (−20°C) until infused. Glucose infusate solution (25%, wt/wt) was prepared and stored using the same procedures as those described for SH to eliminate processing effects. Based on their respective heats of combustion, infusion rates of 12.6 and 14.4 g/(kg ofBW0.75d) were used to achieve isoenergetic infusions of SH and glucose, respectively, and to supply 20% of the total MEI. Further, this amount approximates the maximal small intestinal, digestive capacity of SH in growing beef steers (Branco et al., 1999)