Dietary methionine supply affects the amino acid composition of body proteins

摘要

The amino acid requirements for growing animals are often estimated using nitrogen balance studies. In these studies, it is assumed that the amino composition of body protein is constant. However, there are some doubts concerning the validity of thishypothesis (Gahl et al., 1994; Wei and Fuller, 2006). The objective of this study was to test the hypothesis that the amino acid composition of body protein is affected by the methionine (Met) supply in piglets.