Effects of Dietary Arginine on Growth Performance, Digestion, Absorption Ability, Antioxidant Capability, Gene Expression of Intestinal Protein Synthesis, and Inflammation-Related Genes of Triploid Juvenile Oncorhynchus mykiss Fed a Low-Fishmeal Diet

Table 2

Amino acid composition of the basal diets (air-dry basis, %).

Amino acids	G1	G2	G3	G4	G5
Dispensable amino acids
Asp	4.43	4.18	4.43	4.22	4.20
Thr	1.87	1.79	1.69	1.68	1.64
Ser	2.23	2.06	2.47	2.45	2.40
Glu	6.51	6.38	6.56	6.54	6.49
Gly	2.66	2.68	3.38	3.36	3.31
Ala	2.74	2.36	2.66	2.74	2.69
Cys	0.72	0.72	0.75	0.73	0.78
Indispensable amino acids
Val	2.01	2.10	2.06	2.02	2.14
Met	0.85	0.94	0.86	0.86	0.97
Ile	2.04	1.92	1.90	1.98	1.92
Leu	3.96	3.85	3.87	3.76	3.86
Tyr	1.69	1.61	1.64	1.62	1.57
Phe	2.25	2.25	2.05	2.04	2.06
Lys	2.96	2.69	2.38	2.28	2.49
His	1.33	1.26	1.20	1.18	1.22
Arg	0.86	1.65	2.10	2.85	3.50
Pro	2.40	2.63	2.83	2.81	2.61
EAA	20.35	20.9	20.89	21.4	22.34
TAA	41.51	41.07	42.83	43.12	43.85

Abbreviations: Asp: aspartate; Thr: threonine; Ser: serine; Glu: glutamate; Gly: glycine; Ala: alanine; Cys: cysteine; Val: valine; Met: methionine; Ile: isoleucine; Leu: leucine; Tyr: tyrosine; Phe: phenylalanine; Lys: lysine; His: histidine; Arg: arginine; Pro: proline; EAA: essential amino acid; TAA: total amino acids.