Figure 1

Serum free fatty acid (FFA), β-hydroxybutyrate (BHB) and insulin concentrations. Least squares means of FFA concentration (mEq/L) (A), BHB concentration (mmol/L) (B) and insulin concentration (µg/L) (C) during the periparturient period. Error bars represent the SEM. Time-points with different letters differ significantly (abcd, P < 0.05). P-values for the effect of wk relative to calving on the different metabolites are derived from the linear mixed effect model.