Total dry matter intake increased curvilinearly from
4.0 to 6.4 kg/d as the amount of concentrate consumed
increased (Fig. 1). The substitution rate of concentrate
for Guinea grass and rice straw increased linearly with
amount of supplement consumed (Table 3), and was as
high as 0.49 kg DM/kg DM (Table 4).
The intakes of OM, CP, EE, and GE, increased curvilinearly
with increasing concentrate offered (Table 3);
however there were no significant differences between
the T3 and T4 treatments (Table 4). The ANOVA