SLC5A1 and fetal growth restriction: The results showed that the AKP activity (Figure 5(a)), Na+/K+-ATPase activity (Figure 5(b)), and SGLT1 (Figure 5(c)) and AMPK-α1 (Figure 5(e)) mRNA expression in jejunum mucosa decreased significantly (P < 0.05) when piglets suffered from IUGR, while there was no difference in the expression of GLUT2 (Figure 5(d)) between the NBW piglets and IUGR piglets.