It is a common practice for producers to include excess levels of some amino acids in pig diets to minimise growth variation in pigs, further correct dietary levels of amino acids like lysine and leucine can improve feed intake and increase average daily gain in weaner pigs, as well as reduce feed composition costs.

Previous research has indicated that an excess of protein and some amino acids can negatively affect feed intake and growth in weaner pigs. This project aimed to determine the amino acid balance and appetition in weaned pigs and the performance impact of providing dietary excess of amino acids.