Table 5.
Fatty acid composition (g/100 g of fatty acid methyl esters)# of the filets of the gilthead sea bream fed with the four exerimental diets.
| GROUP | p -value | SEM1 | |||||
|---|---|---|---|---|---|---|---|
| HIM0 | HIM25% | HIM35% | HIM50% | D2 | BW3 | ||
| Fish | 18 | 18 | 18 | 18 | |||
| C12:0 | 0.05 d | 0.23 c | 0.40 b | 0.58 a | <0.0001 | 0.265 | 0.001 |
| C14:0 | 2.57 b | 2.59 b | 2.63 ab | 2.75 a | 0.001 | 0.636 | 0.012 |
| C14:1 | 0.06 b | 0.06 b | 0.06 b | 0.07 a | 0.001 | 0.320 | <0.0001 |
| C15:0 | 0.20 a | 0.19 b | 0.19 b | 0.19 b | 0.001 | 0.690 | <0.0001 |
| C16:0 | 15.29 | 15.31 | 15.12 | 15.41 | 0.626 | 0.944 | 0.257 |
| C16:1 | 4.17 | 4.16 | 4.25 | 4.16 | 0.610 | 0.716 | 0.031 |
| C17:0 | 0.17 a | 0.16 b | 0.16 b | 0.17 a | 0.003 | 0.610 | <0.0001 |
| C17:1 | 0.03 | 0.03 | 0.03 | 0.03 | 0.296 | 0.407 | <0.0001 |
| C18:0 | 3.41 | 3.45 | 3.40 | 3.38 | 0.898 | 0.113 | 0.054 |
| C18:1n9 | 40.62 ab | 41.11 a | 40.78 a | 40.02 b | <0.0001 | 0.715 | 0.308 |
| C18:1n7 | 3.11 a | 3.15 a | 3.06 ab | 3.01 b | 0.001 | 0.996 | 0.062 |
| C18:2n6 | 12.83 c | 12.78 c | 13.17 b | 13.52 a | <0.0001 | 0.231 | 0.062 |
| C18:3n6 | 0.17 | 0.16 | 0.18 | 0.15 | 0.058 | 0.031 | 0.001 |
| C18:3n3 | 3.26 | 3.28 | 3.25 | 3.30 | 0.661 | 0.348 | 0.010 |
| C20:0 | 0.25 | 0.26 | 0.25 | 0.26 | 0.352 | 0.770 | <0.0001 |
| C20:1n9 | 2.02 a | 2.02 a | 1.82 b | 1.79 b | <0.0001 | 0.339 | 0.006 |
| C20:2n6 | 0.29 b | 0.29 b | 0.31 b | 0.33 a | <0.0001 | 0.460 | 0.001 |
| C20:3n6 | 0.16 | 0.17 | 0.17 | 0.17 | 0.505 | 0.112 | <0.0001 |
| C20:4n3 | 0.39 a | 0.35 b | 0.37 ab | 0.36 b | 0.0003 | 0.682 | 0.001 |
| C20:4n6 ARA | 0.12 b | 0.12 b | 0.13 ab | 0.14 a | 0.0002 | 0.224 | <0.0001 |
| C20:5n3 EPA | 3.41 a | 3.20 b | 3.33 a | 3.32 a | 0.0002 | 0.026 | 0.012 |
| C22:0 | 0.14 | 0.14 | 0.14 | 0.15 | 0.675 | 0.823 | <0.0001 |
| C22:1n9 | 1.12 a | 0.99 b | 0.93 b | 0.94 b | 0.0005 | 0.738 | 0.012 |
| C22:5n3 DPA | 1.28 b | 1.27 b | 1.34 a | 1.34 a | 0.047 | 0.677 | 0.006 |
| C22:6n3 DHA | 4.80 a | 4.48 b | 4.46 b | 4.41 b | 0.008 | 0.588 | 0.077 |
HIM0, fish meal group; HIM25, HIM35, and HIM50%, Hermetia illucens meal at 2, 35, and 50% substitution rates of fish meal groups, respectively.
Fish: 18 per diet, 6 fish per tank, and 3 replications per diet.
#Concentration of fatty acid is expressed as g/100 g, considering 100 g the sum of the areas of all the fatty acid methyl esters (FAMEs) identified.
Mean values with different letters in the same row are significantly different at p < 0.05.
ARA, arachidonic acid; EPA, eicosapentaenoic acid; DPA, docosapentaenoic acid; DHA, docosahexaenoic acid.
1
Standard error of the mean.
2
Diet.
3
Body weight.