Application of the slope‐ratio growth assay technique to estimate tryptophan availability in soybean meal fed to young rats

The slope‐ratio assay for rat was used to determine whether tryptophan (Trp) availability in soybean meal (SBM) is affected by the presence of other amino acids (AAs). In a preliminary study, rats were fed graded levels of Trp‐supplemented diets to establish the Trp concentration range over which th...

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