Comparing the metabolic traits between breeds. a) Bar plots of metabolic traits that significantly differed across sexes and breeds i.e. Duroc (DU), Iberian (IB), Landrace (LR), Large White (LW) and a Sino-European hybrid line (YL). b) Dendrogram of the four pig breeds (DU, IB, LR, LW) in terms of average standardized values for the 12 plasma metabolites. c-e) Dendrograms between breed z-scores for a subset of tissues i.e. thyroid (THYG), adenohypophysis (AHYP) and backfat (FATB).