extremely significantP < 0.01
In general, the levels of MDA, SOD, and T-AOC in the serum of the Jinfen White and Mashen piglets increased over time, except for the MDA and SOD content of the Mashen piglets at the weaning stage ( Figures 2A,B ), of which the SOD and T-AOC increased by an extremely significant amount in the Jinfen White piglets ( P < 0.01).