SOD1 and fetal growth restriction: Relative to the IUGR lambs, colonic SOD, GSH-Px, T-AOC, GSH activities, and GSH/GSSG ratio was higher (p < 0.05), whereas the ROS production and levels of MDA, GR, H2O2, and protein carbonyl were lower (p < 0.05) in the IUGR + Arg and IUGR + NCG lambs [19].