Table 2: Chemical composition of L-lysine sulfate and L-lysine.HCl.

AttributeL-lysine sulfateL-lysine.HCl

Active lysine content %50.778.0–78.8

Metabolizable energy MJ/kg
 Swine17.7318.7
 Poultry17.316.7

Phosphorus %0.16Not detected

Additional amino acid %#
 Lysine0.35
 Methionine0.35
 Cysteine0.10
 Threonine0.28
 Tryptophan0.14
 Arginine0.38
 Isoleucine0.33

Chemical analysis was performed by CJ CheilJedang Corporation, Gayang-dong, Gangseo-gu, Seoul, Korea.
#L-lysine.HCl did not contain any additional amino acid.