GPT and fetal growth restriction: The higher levels of alanine aminotransferase (ALT) in the blood of IUGR piglets compared to normal-sized piglets were also found by Gao et al. (2020), who also found higher levels of aspartate aminotransferase (AST) in IUGR piglets compared to normal-sized piglets at all the time points measured (days 1, 7, and 28).