rumen VFA moles had a negative effect on the lkp independent of the positive effect of free water intake (SE; P-value in parentheses): 0.07447 (0.03787; 0.06) + 0.000791 (0.000247; < 0.01) × free water intake, kg/d − 0.00425 (0.00215; 0.06)
× VFA moles (adjusted R2 = 0.39, RMSE = 0.0260,CV = 19.6%)