Assessment of the Efficacy of L-Lysine Sulfate vis-à-vis L-Lysine Hydrochloride as Sources of Supplemental Lysine in Broiler Chickens

Table 2

Chemical composition of L-lysine sulfate and L-lysine.HCl${}^{†}$.

Attribute	L-lysine sulfate	L-lysine.HCl
Active lysine content %	50.7	78.0–78.8
Metabolizable energy MJ/kg
Swine	17.73	18.7
Poultry	17.3	16.7
Phosphorus %	0.16	Not detected
Additional amino acid %${}^{\#}$
Lysine	0.35
Methionine	0.35
Cysteine	0.10
Threonine	0.28
Tryptophan	0.14
Arginine	0.38
Isoleucine	0.33

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