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Table 2 Fatty acid composition (% of total fatty acids) in the liver of tilapia fed the basal diet un-supplemented (control), or supplemented with 1% Arg, or 2% Arg for 56 days1

From: Dietary L-arginine supplementation reduces lipid accretion by regulating fatty acid metabolism in Nile tilapia (Oreochromis niloticus)

Fatty acid  Control 1%Arg 2%Arg P-value
C12:0 0.03 ± 0.00 0.02 ± 0.00 0.04 ± 0.01 0.055
C14:0 1.70 ± 0.06a 1.44 ± 0.02b 1.49 ± 0.05b 0.033
C15:0 0.07 ± 0.01b 0.07 ± 0.00b 0.10 ± 0.00a 0.006
C16:0 21.26 ± 0.16 21.20 ± 0.29 21.13 ± 0.17 0.935
C17:0 0.23 ± 0.01b 0.23 ± 0.00b 0.29 ± 0.01a 0.003
C18:0 11.61 ± 0.09 11.40 ± 0.23 12.06 ± 0.27 0.267
C20:0 0.21 ± 0.01a 0.18 ± 0.00b 0.15 ± 0.01b 0.014
C21:0 1.55 ± 0.11 1.90 ± 0.04 1.74 ± 0.06 0.084
C22:0 0.20 ± 0.01a 0.16 ± 0.00b 0.12 ± 0.00c 0.004
C23:0 0.13 ± 0.00 0.12 ± 0.00 0.11 ± 0.00 0.086
C24:0 0.57 ± 0.05 0.52 ± 0.01 0.55 ± 0.01 0.639
∑ SFAs 37.57 ± 0.23 37.23 ± 0.47 37.77 ± 0.33 0.694
C14:1n-5 0.02 ± 0.00 0.02 ± 0.00 0.01 ± 0.00 0.422
C16:1n-7 1.56 ± 0.05a 1.69 ± 0.07a 1.26 ± 0.05b 0.011
C18:1n-9 36.49 ± 0.42a 33.57 ± 0.39b 27.18 ± 0.09c 0.000
C20:1n-9 1.65 ± 0.22 1.87 ± 0.01 1.20 ± 0.02 0.062
C22:1n-9 0.05 ± 0.00b 0.09 ± 0.00a 0.05 ± 0.00b 0.000
C24:1n-9 0.12 ± 0.01b 0.10 ± 0.00b 0.23 ± 0.01a 0.000
∑ MUFAs 39.89 ± 0.61a 37.33 ± 0.43b 29.94 ± 0.11c 0.000
C18:3n-3 0.76 ± 0.04 0.76 ± 0.03 0.97 ± 0.06 0.073
C20:3n-3 0.27 ± 0.01b 0.26 ± 0.01b 0.39 ± 0.01a 0.001
C20:5n-3 0.04 ± 0.00b 0.04 ± 0.00b 0.07 ± 0.00a 0.001
C22:6n-3 3.23 ± 0.07c 4.05 ± 0.04b 7.08 ± 0.23a 0.000
∑ n-3 PUFAs 4.30 ± 0.11c 5.11 ± 0.08b 8.51 ± 0.18a 0.000
C18:2n-6 13.28 ± 0.43b 15.32 ± 0.72ab 16.48 ± 0.24a 0.028
C20:3n-6 1.68 ± 0.08 1.48 ± 0.02 1.54 ± 0.06 0.259
C20:4n-6 3.25 ± 0.13b 3.49 ± 0.05b 5.73 ± 0.14a 0.000
C22:2n-6 0.03 ± 0.01 0.04 ± 0.00 0.04 ± 0.00 0.702
∑ n-6 PUFAs 18.24 ± 0.30b 20.33 ± 0.79b 23.78 ± 0.42a 0.003
∑ PUFAs 22.55 ± 0.39c 25.44 ± 0.86b 32.29 ± 0.40a 0.000
n-6:n-3 4.24 ± 0.06a 3.97 ± 0.10a 2.80 ± 0.09b 0.000
  1. 1Values are means ± SEM, n = 3 tanks per group. Means without a common letter differ, P < 0.05. MUFAs, monounsaturated fatty acids; n-6:n-3, n-6 PUFAs:n-3 PUFAs; PUFAs, polyunsaturated fatty acids; SFAs, saturated fatty acids