Abstract Excess dietary leucine in diets for growing pigs reduces growth performance, biological value of protein, protein retention, and serotonin synthesis Kwon, W., K. Touchette, A. Simongiovanni, K. Syriopoulos, A. Wessels and H. Stein March 2020 Branched-chain Amino Acids | Growing Pigs | Growth Performance | Leucine | Protein | Serotonin | Swine