Effects of Dietary Fish Meal Replacement with Composite Mixture of Chicken Meal, Krill Meal, and Plant Proteins on Growth, Physiological Metabolism, and Intestinal Microbiota of Chinese Perch (Siniperca chuatsi)

Table 5

Effect of dietary fish meal replacement with protein mixtures on the muscle amino acid in Chinese perch (Siniperca chuatsi) (%, dry matter basis).

Items	Diets
	Control (D1)	27.27% (D2)	54.55% (D3)
Essential amino acid
Arginine	5.07 ± 0.10^a	5.15 ± 0.00^b	5.04 ± 0.03^a
Histidine	1.89 ± 0.02^a	1.99 ± 0.00^b	1.96 ± 0.03^b
Valine	4.28 ± 0.05^a	4.39 ± 0.02^b	4.28 ± 0.03^a
Phenylalanine	3.68 ± 0.03^a	3.78 ± 0.00^b	3.65 ± 0.04^a
Leucine	6.82 ± 0.08^a	6.99 ± 0.03^b	6.79 ± 0.05^a
Isoleucine	4.04 ± 0.05^a	4.14 ± 0.01^b	4.04 ± 0.04^a
Threonine	3.93 ± 0.04^a	4.03 ± 0.01^b	3.88 ± 0.04^a
Methionine	2.99 ± 0.04	2.95 ± 0.12	2.94 ± 0.08
Lysine	8.38 ± 0.13^ab	8.55 ± 0.01^b	8.19 ± 0.08^a
∑EAA^1	41.09 ± 0.52^a	41.97 ± 0.14^b	40.78 ± 0.26^a
Nonessential amino acid
Aspartic	8.87 ± 0.09^a	9.09 ± 0.03^b	8.83 ± 0.08^a
Serine	3.46 ± 0.05	3.55 ± 0.01	3.46 ± 0.05
Glutamic	13.15 ± 0.11^a	13.50 ± 0.12^b	12.98 ± 0.06^a
Alanine	5.36 ± 0.11	5.41 ± 0.00	5.31 ± 0.05
Glycine	4.36 ± 0.20	4.25 ± 0.14	4.36 ± 0.12
Tyrosine	2.81 ± 0.03^a	2.92 ± 0.00^b	2.81 ± 0.01^a
Proline	2.76 ± 0.12	2.76 ± 0.07	2.85 ± 0.07
Cystine	0.85 ± 0.02	0.85 ± 0.01	0.84 ± 0.03
∑NEAA^2	41.63 ± 0.69	42.33 ± 0.06	41.44 ± 0.20
∑AA^3	82.72 ± 1.19^ab	84.30 ± 0.09^b	82.22 ± 0.38^a

Notes. ¹∑EAA, total essential amino acids; ²∑NEAA, total nonessential amino acids; ³∑AA, total amino acids. Values in the same row with different superscripts show significant difference ().