Effects of Different Habitat Space on Growth Performance and Nutritional Composition of Swimming Crabs (Portunus trituberculatus)

Table 4

Amino acid compositions (%) of P. trituberculatus (dry matter; n = 3).

Amino acid	Different habitat space
	0.5 m^2	1 m^2	10 m^2	100 m^2
Aspartic acid^#	5.97 ± 0.26	5.18 ± 0.58	5.63 ± 0.16	5.17 ± 0.31
Threonine	2.65 ± 0.12	2.36 ± 0.23	2.59 ± 0.05	2.39 ± 0.16
Serine	2.32 ± 0.10	2.13 ± 0.20	2.29 ± 0.05	2.10 ± 0.13
Glutamic acid^#	8.68 ± 0.34	7.35 ± 0.84	8.02 ± 0.19	7.37 ± 0.45
Glycine^#	4.71 ± 0.19	3.93 ± 0.38	4.28 ± 0.06	3.91 ± 0.26
Alanine^#	3.98 ± 0.17	3.44 ± 0.33	3.74 ± 0.08	3.53 ± 0.25
Cysteine	3.59 ± 0.20	3.32 ± 0.30	3.49 ± 0.06	3.22 ± 0.25
Valine	3.02 ± 0.15	2.73 ± 0.28	2.99 ± 0.06	2.70 ± 0.19
Methionine	3.49 ± 0.21	2.99 ± 0.31	3.28 ± 0.06	2.99 ± 0.26
Isoleucine	2.81 ± 0.13	2.43 ± 0.28	2.69 ± 0.05	2.45 ± 0.17
Leucine	5.05 ± 0.21	4.48 ± 0.47	4.88 ± 0.05	4.38 ± 0.31
Phenylalanine^#	0.42 ± 0.02	0.37 ± 0.06	0.43 ± 0.11	0.24 ± 0.04
Lysine	5.01 ± 0.23	4.43 ± 0.43	4.80 ± 0.10	4.34 ± 0.30
Arginine	6.13 ± 0.28	5.82 ± 0.60	6.22 ± 0.18	5.55 ± 0.35
Proline	4.18 ± 0.15^a	3.44 ± 0.30^ab	4.04 ± 0.09^ab	3.20 ± 0.22^b
EAA	26.04 ± 1.22	25.62 ± 2.65	25.15 ± 0.37	22.71 ± 1.66
NEAA	35.96 ± 1.83	31.31 ± 3.94	34.23 ± 0.82	30.82 ± 2.41
TAA	64.23 ± 3.35	56.20 ± 7.03	61.66 ± 1.39	55.87 ± 4.80
DAA	23.75 ± 0.95	20.29 ± 2.18	22.11 ± 0.48	20.22 ± 1.30
EAAs/NEAAs	0.72 ± 0.01^b	0.82 ± 0.00^a	0.74 ± 0.01^b	0.74 ± 0.01^b
EAAs/TAAs	0.41 ± 0.00^b	0.46 ± 0.00^a	0.41 ± 0.00^b	0.41 ± 0.00^b

Note: Essential amino acids; ^#Umami amino acids; EAAs means total essential amino acids; NEAAs means total nonessential amino acids; TAA means total amino acids; DAAs means total delicious amino acids.