TABLE 4.
Growth performance and somatic indexes of gilthead seabream fed the experimental diets for 85 days.
| CTRL | AD1 | AD2 | AD3 | P | |
| Growth | |||||
| Initial body weight (g, IBW) | 371.20 ± 14.50 | 378.95 ± 2.38 | 375.52 ± 13.39 | 369.97 ± 9.82 | 0.75 |
| Final body weight (g, FBW) | 625.76 ± 5.38a | 622.61 ± 6.77a | 623.11 ± 3.19a | 589.46 ± 5.49b | <0.001 |
| Weight gain (g, WG) | 254.56 ± 11.18a | 243.66 ± 8.25ab | 247.59 ± 16.33ab | 219.49 ± 12.26b | 0.04 |
| Final condition factor (K) | 1.84 ± 0.05 | 1.89 ± 0.13 | 1.79 ± 0.03 | 1.78 ± 0.02 | 0.30 |
| Specific growth rate (SGR) | 0.73 ± 0.05 | 0.69 ± 0.02 | 0.70 ± 0.06 | 0.65 ± 0.04 | 0.23 |
| Feed conversion ratio (FCR) | 1.67 ± 0.02 | 1.72 ± 0.06 | 1.73 ± 0.12 | 1.91 ± 0.13 | 0.06 |
| Protein efficiency ratio (PER) | 1.20 ± 0.03a | 1.15 ± 0.04ab | 1.14 ± 0.07ab | 1.03 ± 0.07b | 0.03 |
| Intake (g or kJ or mg kg–1 ABW day–1) | |||||
| Dry matter (g kg–1) | 9.90 ± 0.39 | 9.85 ± 0.05 | 10.13 ± 0.19 | 10.40 ± 0.23 | 0.09 |
| Protein (g kg–1) | 5.00 ± 0.19 | 4.97 ± 0.03 | 5.14 ± 0.10 | 5.24 ± 0.12 | 0.10 |
| Lipids (g kg–1) | 1.65 ± 0.06a | 1.60 ± 0.01ab | 1.59 ± 0.04ab | 1.54 ± 0.03b | 0.04 |
| Energy (kJ kg–1) | 236.02 ± 9.19 | 235.89 ± 1.31 | 242.50 ± 4.61 | 247.23 ± 5.43 | 0.12 |
| Iodine (mg kg–1) | 13.31 ± 0.52d | 79.76 ± 0.44c | 90.88 ± 1.73b | 151.78 ± 3.34a | <0.001 |
| Selenium (mg kg–1) | 7.50 ± 0.29c | 11.36 ± 0.06b | 10.82 ± 0.21b | 14.63 ± 0.32a | <0.001 |
| Somatic indexes | |||||
| Hepatosomatic index (HSI, %) | 1.56 ± 0.12 | 1.31 ± 0.07 | 1.29 ± 0.05 | 1.34 ± 0.17 | 0.07 |
| Viscerosomatic index (VSI, %) | 5.70 ± 0.44 | 5.60 ± 0.32 | 5.75 ± 0.9 | 5.73 ± 0.09 | 0.97 |
Values are presented as mean ± standard deviation (SD). Growth performance and intake parameters were calculated with three pooled samples per treatment of six fish per tank. Somatic indexes were calculated with 15 fish per treatment (five fish per tank). Different superscript letters in a row denote significant differences among treatments.