In the liver of IUGR newborn piglets, the mRNA expressions for nuclear factor, erythroid 2-like 2 (Nfe2l2), heme oxygenase-1 (Hmox1), catalase (Cat), and glutathione peroxidase 1 (Gpx1) were significantly lower (p < 0.01) than those of the NBW newborn piglets (Table 5). Here, HMOX1 is linked to fetal growth restriction.