Skip to main content

Table 7 Fillets chemical and fatty acid compositions of rainbow trout fed the experimental diets (n = 8)

From: Evaluation of the suitability of a partially defatted black soldier fly (Hermetia illucens L.) larvae meal as ingredient for rainbow trout (Oncorhynchus mykiss Walbaum) diets

Items HI0 HI25 HI50 SEM P-value
Chemical composition, g/100 g WW
 DM 25.06 b 25.79 ab 26.31 a 0.194 0.022
 CP 19.58 19.37 19.56 0.064 0.360
 EE 4.18 b 5.19 ab 5.48 a 0.219 0.036
 Ash 1.20 a 1.00 b 1.09 ab 0.030 0.015
Fatty acid composition, g/100 g of TFA
 C12:0 0.29 c 8.07 b 14.66 a 1.239 0.000
 C14:0 3.97 c 5.49 b 6.47 a 0.224 0.000
 C14:1 c + C15:0 0.40 0.47 0.43 0.014 0.072
 C16:0 22.73 a 20.69 b 20.38 b 0.280 0.000
 C16:1 c 6.22 6.45 6.41 0.075 0.428
 C17:0 0.49 a 0.41 b 0.35 b 0.015 0.000
 C17:1 c9 0.05 b 0.08 a 0.07 ab 0.004 0.002
 C18:0 5.45 a 4.79 b 4.64 b 0.107 0.001
 C18:1 t 0.97 a 0.69 b 0.66 b 0.044 0.001
 C18:1 c9 31.33 a 27.62 b 26.37 b 0.531 0.000
 C18:1 c11 4.03 a 3.43 b 2.91 c 0.102 0.000
 C18:2 n6 10.30 a 9.46 ab 9.01 b 0.208 0.027
 C18:3 n6 3.05 a 2.29 b 1.73 c 0.135 0.000
 C18:3 n3 1.97 a 1.90 a 1.49 b 0.066 0.002
 C20:0 0.36 a 0.36 a 0.23 b 0.016 0.000
 C20:1 c11 0.40 a 0.39 a 0.25 b 0.018 0.000
 C20:2 n6 0.83 a 0.74 a 0.57 b 0.030 0.000
 C20:3 n6 0.30 0.27 0.29 0.007 0.442
 C20:4 n6 0.49 a 0.46 a 0.29 b 0.022 0.000
 C20:5 n3 2.33 a 2.03 a 1.07 b 0.133 0.000
 C22:5 n3 0.66 a 0.50 b 0.23 c 0.038 0.000
 C22:6 n3 3.39 a 3.40 a 1.50 b 0.203 0.000
 ∑ SFA 33.28 c 39.81 b 46.74 a 1.186 0.000
 ∑ MUFA 43.40 a 39.13 b 37.09 c 0.623 0.000
 ∑ PUFA 23.31 a 21.06 b 16.17 c 0.693 0.000
 ∑ PUFA/∑ SFA 0.70 a 0.53 b 0.35 c 0.033 0.000
 ∑ n3 8.34 a 7.84 a 4.29 b 0.418 0.000
 ∑ n6 14.97 a 13.22 b 11.88 c 0.309 0.000
 ∑ n3/∑ n6 0.56 a 0.59 a 0.36 b 0.024 0.000
 AI 0.58 c 0.84 b 1.15 a 0.050 0.000
 TI 0.60 b 0.62 b 0.85 a 0.026 0.000
  1. Abbreviations: HI Hermetia illucens, SEM standard error of the mean, WW wet weight, DM dry matter, CP crude protein, EE ether extract, c cis, t trans, FA fatty acids, SFA saturated fatty acids, MUFA monounsaturated fatty acids, PUFA polyunsaturated fatty acids, AI atherogenicity index, TI thrombogenicity index, TFA total fatty acids
  2. Different letters within a row indicate significant differences (P ≤ 0.05)
  3. All values are reported as mean of triplicate analyses