Fig. 4

Comparison of the functional capacities of the gut microbiomes between Nursing and Weaned piglets associated with “stress response”. Normalized abundance of the level 2 SEED subsystem classified reads associated with stress response (a). Normalized abundance of proteins at the level 4 SEED subsystem associated with heat shock (b) and oxidative stress (c). The error bars show the calculated standard deviation of four replicates, and the [P < 0.001], [P < 0.01] and [P < 0.05] were indicated as [***], [**] and [*], respectively