Table 6.
Hepatopancreas fatty acid composition of juvenile mud crab Scylla paramamosain fed with different dietary ARA levels (mg g−1 dry matter).
| Fatty acids | Dietary ARA levels (g kg−1) | ANOVA | Linear | Quadratic | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.40 | 2.50 | 4.60 | 8.90 | 12.50 | 15.70 | p value | p value | R 2 | p value | R 2 | |
| 14 : 0 | 1.55 ± 0.16a | 2.13 ± 0.11ab | 2.47 ± 0.18b | 2.70 ± 0.15b | 2.7 ± 0.05b | 3.91 ± 0.31c | 0.000 | 0.000 | 0.740 | 0.000 | 0.728 |
| 16 : 0 | 18.39 ± 0.22a | 20.22 ± 0.34b | 22.11 ± 0.32c | 23.55 ± 0.17d | 25.47 ± 0.22e | 26.59 ± 0.17e | 0.000 | 0.000 | 0.954 | 0.000 | 0.971 |
| 18 : 0 | 4.26 ± 0.32a | 4.24 ± 0.13a | 5.43 ± 0.10b | 7.29 ± 0.23c | 8.48 ± 0.16d | 10.12 ± 0.00e | 0.000 | 0.000 | 0.969 | 0.000 | 0.971 |
| ∑SFAa | 24.20 ± 0.22a | 26.59 ± 0.57b | 30.01 ± 0.24c | 33.54 ± 0.22d | 36.66 ± 0.20e | 40.62 ± 0.43f | 0.000 | 0.000 | 0.984 | 0.000 | 0.984 |
| 16:1n-7 | 2.21 ± 0.38a | 3.02 ± 0.13ab | 3.40 ± 0.21bc | 4.14 ± 0.41cd | 4.40 ± 0.10d | 5.57 ± 0.18e | 0.000 | 0.000 | 0.848 | 0.000 | 0.838 |
| 18:1n-9 | 12.92 ± 0.42a | 13.51 ± 0.33a | 14.20 ± 0.47a | 18.16 ± 0.19b | 21.55 ± 0.20c | 30.56 ± 0.09d | 0.000 | 0.000 | 0.879 | 0.000 | 0.977 |
| ∑MUFAb | 15.13 ± 0.19a | 16.53 ± 0.44b | 17.40 ± 0.45b | 22.30 ± 0.53c | 25.95 ± 0.11d | 36.13 ± 0.27e | 0.000 | 0.000 | 0.902 | 0.000 | 0.974 |
| 18:2n-6 | 2.84 ± 0.11a | 4.29 ± 0.04b | 4.90 ± 0.29bc | 5.41 ± 0.15c | 6.50 ± 0.20d | 8.25 ± 0.56e | 0.000 | 0.000 | 0.890 | 0.000 | 0.884 |
| 20:4n-6 | 1.46 ± 0.04a | 2.94 ± 0.03b | 6.26 ± 0.10c | 12.24 ± 0.04d | 18.09 ± 0.20e | 25.71 ± 0.24f | 0.000 | 0.000 | 0.982 | 0.000 | 0.997 |
| ∑n − 6PUFAc | 4.29 ± 0.09a | 7.23 ± 0.01b | 11.16 ± 0.26c | 17.65 ± 0.14d | 24.59 ± 0.20e | 33.96 ± 0.75f | 0.000 | 0.000 | 0.982 | 0.000 | 0.994 |
| 18:3n-3 | 0.40 ± 0.14a | 0.71 ± 0.02b | 0.88 ± 0.07bc | 1.07 ± 0.07cd | 1.29 ± 0.01d | 1.58 ± 0.06e | 0.000 | 0.000 | 0.898 | 0.000 | 0.894 |
| 20:5n-3 | 3.83 ± 0.04a | 5.02 ± 0.06b | 5.61 ± 0.05c | 7.11 ± 0.05d | 9.44 ± 0.06e | 10.24 ± 0.03f | 0.000 | 0.000 | 0.986 | 0.000 | 0.985 |
| 22:5n-3 | 0.44 ± 0.05a | 0.78 ± 0.01b | 0.93 ± 0.06bc | 1.10 ± 0.02c | 0.54 ± 0.07a | 1.60 ± 0.00d | 0.000 | 0.006 | 0.351 | 0.023 | 0.316 |
| 22:6n-3 | 3.36 ± 0.09a | 6.08 ± 0.17b | 7.32 ± 0.08c | 10.60 ± 0.00d | 14.02 ± 0.24e | 17.32 ± 0.07f | 0.000 | 0.000 | 0.992 | 0.000 | 0.992 |
| ∑n − 3PUFAd | 8.03 ± 0.29a | 12.60 ± 0.17b | 14.74 ± 0.21c | 19.88 ± 0.14d | 24.28 ± 0.22e | 30.74 ± 0.12f | 0.000 | 0.000 | 0.991 | 0.000 | 0.991 |
| ∑n − 3LC − PUFAe | 7.63 ± 0.16a | 11.88 ± 0.15b | 13.86 ± 0.15c | 18.81 ± 0.08d | 23.99 ± 0.23e | 29.15 ± 0.06f | 0.000 | 0.000 | 0.992 | 0.000 | 0.993 |
| ARA/EPAf | 0.38 ± 0.01a | 0.59 ± 0.01b | 1.12 ± 0.03c | 1.72 ± 0.02d | 1.92 ± 0.02e | 2.51 ± 0.02f | 0.000 | 0.000 | 0.975 | 0.000 | 0.978 |
| ARA/DHA g | 0.43 ± 0.01a | 0.48 ± 0.01a | 0.86 ± 0.02b | 1.15 ± 0.00c | 1.29 ± 0.02d | 1.48 ± 0.02e | 0.000 | 0.000 | 0.952 | 0.000 | 0.969 |
Data are presented as mean ± SD (n = 3). Values in the same row with different superscripts are significantly different (p < 0.05). Some fatty acids, of which the contents are minor, trace amount or not detected, such as 12 : 0, 20 : 0, 22 : 0, 24 : 0, 22:1n-9, 22:1n-11, 20:2n-6, 20:3n-6, 22:4n-6, 20:5n-6, and 20:3n-3, were not listed in this table. aSFA: saturated fatty acids; bMUFA: monounsaturated fatty acids; cn-6 PUFA: n-6 polyunsaturated fatty acids; dn-3 PUFA: n-3 polyunsaturated fatty acids; en-3 LC-PUFA: n-3 long chain poly-unsaturated fatty acid; fARA/EPA, the ratio of ARA to EPA; and gARA/DHA, the ratio of ARA to DHA.