Maintenance requirements
—Dairy Heifers = SBW0.75 x 0.086, Mcal/d
—Dairy Cows = SBW0.75 x 0.080, Mcal/d
—Beef = SBW0.75 x 0.077, Mcal/d
—
—Include basal metabolism + 10% for physical activity
Fox et al. (2004)