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Table 2 Comparison of test diet amino acid compositions with NRC requirements 1,2

From: Leucine content of dietary proteins is a determinant of postprandial skeletal muscle protein synthesis in adult rats

Amino Acid Wheat Diet Soy Dietg/kg diet Egg Diet Whey Diet NRC Requirement
Phenyalanine + Tyrosine 11.5 17.0 16.8 10.7 1.9
Histidine 3.1 4.2 3.9 3.4 0.8
Isoleucine 5.1 8.1 9.0 10.5 3.1
Leucine 11.5 13.6 14.9 18.5 1.8
Lysine3 4.7(+10.1) 10.7 11.0 15.4 1.1
Methionine + Cysteine 6.5 4.4 13.9 7.6 2.3
Threonine 4.4 6.5 7.6 10.9 1.8
Tryptophan 2.2 2.0 2.7 2.7 0.5
Valine 7.6 8.0 11.5 10.2 2.3
  1. 1Table 2–2 from Nutrient Requirements of Laboratory Animals Fourth Revised Edition [11].
  2. 2Values calculated for 300 g rat at maintenance.
  3. 3Vital Wheat Gluten supplemented with 10.6 g L-lysine/kg diet to match Whey Protein Isolate.