Species Variations in the Proximate Composition, Amino Acid Profile, and Protein Quality of the Muscle Tissue of Grass Carp, Bighead Carp, Siberian Sturgeon, and Wels Catfish

Table 4

CS (Chemical Score) and EAAI (Essential Amino Acid Index) for protein of grass carp, bighead carp, Siberian sturgeon, and wels catfish (%).

Amino acid	Grass carp	Bighead carp	Siberian sturgeon	Wels catfish	Standard
Ile	143	141	144	145	3.0
Leu	128	129	131	131	6.1
Lys	205	202	209	202	4.8
Met + Cys	137	110	116	98	2.3
Phe + Tyr	176	180	191	180	4.1
Thr	190	188	194	206	2.5
Try	458	461	273	300	0.66
Val	123	123	121	119	4.0
His	168	167	206	146	1.6
EAAI	139	136	134	128

Recommended amino acid scoring pattern for adult.