Table 4. The proximate nutrient content and fatty acid composition of flesh of Asian seabass juveniles on different diets at 168 dph.
(A) Proximate nutrient composition | Diet (Mean) | SEM | ||||||
A | B | C | D | A | B | C | D | |
Dry matter (g/100 g) | 21.7a | 23.0a | 23.5a | 23.1a | 0.68 | 1.0 | 1.6 | 1.1 |
Crude protein % | 21.0a | 20.6a | 18.9a | 20.4a | 0.19 | 0.68 | 0.87 | 0.85 |
Crude fat % | 1.0a | 2.3b | 1.6ab | 1.4ab | 0.07 | 0.25 | 0.14 | 0.07 |
(B) Fatty acid composition (area %) | Diet (Mean) | SEM | ||||||
A | B | C | D | A | B | C | D | |
Myristic (C14:0) | 2.5a | 3.9b | 2.0a | 3.6b | 0.13 | 0.12 | 0.06 | 0.19 |
Pentadecanoic (C15:0) | 0.3a | 0.3a | 0.2b | 0.3a | 0.03 | 0.01 | 0.02 | 0.03 |
Palmitic (C16:0) | 18.9a | 18.8ab | 18.2b | 21.0c | 0.22 | 0.22 | 0.10 | 0.16 |
Heptadecanoic (C17:0) | 0.8a | 0.4b | 0.3b | 0.5ab | 0.15 | 0.06 | 0.05 | 0.07 |
Stearic (C18:0) | 8.7a | 6.4b | 6.8bc | 7.3c | 0.19 | 0.16 | 0.15 | 0.20 |
Arachidinic (C20:0) | 0.2a | 0.2a | 0.2a | 0.2a | 0.02 | 0.01 | 0.02 | 0.02 |
ΣSFA | 31.5a | 30.1b | 27.7c | 33.0d | 0.32 | 0.28 | 0.14 | 0.25 |
Palmitoleic (C16:1) | 3.2a | 5.0b | 3.2a | 4.7b | 0.16 | 0.13 | 0.07 | 0.20 |
cis-10 Heptadecanoic (C17:1) | 0.7a | 0.9b | 0.6c | 0.8d | 0.01 | 0.02 | 0.01 | 0.01 |
Oleic (C18:1n9c) | 16.1a | 19.3b | 28.9c | 17.8d | 0.41 | 0.29 | 0.36 | 0.16 |
cis-11 Eicosenoic (C20:1) | 1.0a | 0.8ac | 1.3b | 0.7c | 0.06 | 0.04 | 0.02 | 0.02 |
nervonic acid (C24:1n9) | 0.3a | 0.2a | 0.2a | 0.2a | 0.07 | 0.05 | 0.04 | 0.02 |
ΣMUFA | 21.3a | 26.3b | 34.2c | 24.2d | 0.54 | 0.36 | 0.42 | 0.24 |
Linoleic (C18:2n6) | 4.9a | 10.5b | 14.5c | 8.2d | 0.21 | 0.21 | 0.21 | 0.10 |
γ-Linolenic (C18:3n6) | 0.2a | 0.4b | 0.4b | 0.3b | 0.02 | 0.01 | 0.00 | 0.03 |
cis-11,14 Eicosadienoic (C20:2 n6) | 0.2a | 0.2a | 0.2a | 0.2a | 0.02 | 0.02 | 0.02 | 0.02 |
cis-8,11,14 Eicosatrienoic (C20:3 n6) | 0.2a | 0.2a | 0.2a | 0.2a | 0.02 | 0.02 | 0.02 | 0.03 |
Arachidonic (C20:4n6) | 3.6a | 2.0b | 1.6c | 2.6d | 0.15 | 0.07 | 0.05 | 0.09 |
Σn6-PUFA | 9.2a | 13.2b | 17.0c | 11.6d | 0.17 | 0.16 | 0.17 | 0.08 |
α-Linolenic (C18:3n3) | 1.0a | 1.4b | 1.9c | 1.2d | 0.06 | 0.05 | 0.05 | 0.03 |
cis-11,14,17 Eicosatrienoic (C20:3 n3) | 0.5a | 0.4a | 0.4a | 0.4a | 0.06 | 0.03 | 0.02 | 0.03 |
cis-5,8,11,14,17 Eicosapentaenoic (C20:5n3) | 4.6a | 8.8b | 3.2c | 6.4d | 0.06 | 0.16 | 0.09 | 0.05 |
cis-7,10,13,16,19 Docosapentaenoic (C22:5n3) | 3.0a | 2.9a | 1.5b | 2.5c | 0.08 | 0.07 | 0.03 | 0.03 |
cis-4,7,10,13,16,19 Docosahexaenoic (C22:6n3) | 21.1a | 9.8b | 8.8b | 13.2c | 0.44 | 0.31 | 0.35 | 0.30 |
Σn3-PUFA | 30.2a | 23.4b | 15.9c | 23.8b | 0.36 | 0.27 | 0.41 | 0.33 |
ΣPUFA | 39.3a | 36.6b | 32.8c | 35.3d | 0.32 | 0.19 | 0.28 | 0.33 |
Σn6/Σn3 | 0.30a | 0.57b | 1.08c | 0.5b | 0.01 | 0.01 | 0.04 | 0.01 |
(A) Mean values for proximate nutrient composition are represented based on wet matter basis.
(B) Mean values for fatty acids composition are represented in area % of total composition or fatty acids. Means with different letter of superscripts are significantly different, (Padj < 0.05).
SFA = Saturated fatty acids; MUFA = Monounsaturated fatty acid; PUFA = Poly unsaturated fatty acid.