Intake of the forage mixture by the later group constituted 0.64% of BW and hence, higher (p = 0.002) total forage intake as of BW%. Cows in 75% TMR consumed 12.5% less total DM and 14.2% less kg DM as percentage of BW than cows in 100% TMR. Intake of NDF was not affected by treatment (p>0.05). Intake of ME was higher for cows on the full TMR diet resulting in more (p0.05) between treatments and averaged 29.2 kg day-1; also milk fat concentration and yield were similar (p>0.05) averaging 3.70 and 1.08% kg day-1, respectively. Thus, despite the higher DMI and NEL supply in the 100% TMR treatment, milk yield remained unaffe cted. Milk protein concentration and yield, respectively were lower (p≤0.05) and tended to be lower (p = 0.10) for the 75% TMR (Table 4) diet