Fig. 3

Hierarchical clustering analysis of different plasma metabolites in beef cattle fed with 3 different diets. a and b are derived from the POS and NEG of the plasma, respectively. Each row represents one metabolite, and each column represents one sample. Cells are coloured based on the signal intensity measured in plasma. Red represents high plasma levels, blue shows low signal intensity, and white cells show intermediate levels. LA is the treatment diet based on corn grain steeped for 48 h in an equal quantity of tap water containing 1% lactic acid (wt/vol), HA is the treatment diet based on corn grain steeped for 48 h in an equal quantity of tap water containing 1% hydrochloric acid (wt/vol), and CON is the control diet containing corn grain steeped for 48 h in an equal quantity of tap water