Table 2.
Biometric indices, whole body composition and nutritional indices of European sea bass fed the experimental diets D0, D250, D500, D1000 over 71 days.
| Experimental diets | ||||
|---|---|---|---|---|
| D0 | D250 | D500 | D1000 | |
| Biometric indices | ||||
| VSI | 12.2 ± 1.26 | 12.7 ± 1.99 | 12.4 ± 1.50 | 12.3 ± 1.50 |
| HSI | 2.84 ± 0.42 | 2.83 ± 0.41 | 2.75 ± 0.47 | 2.81 ± 0.43 |
| CF | 1.26 ± 0.08 | 1.22 ± 0.06 | 1.25 ± 0.10 | 1.27 ± 0.12 |
| Whole body composition, % | ||||
| Protein | 16.9 ± 0.6 | 16.3 ± 0.3 | 16 ± 0.3 | 16.5 ± 0.6 |
| Lipid | 17.6 ± 0.7 | 18.9 ± 0.3 | 18 ± 1.6 | 19.1 ± 0.7 |
| Ash | 3.68 ± 0.1 | 3.57 ± 0.5 | 3.51 ± 0.3 | 3.51 ± 0.1 |
| Moisture | 61.7 ± 0.3 | 60.4 ± 0.7 | 60.8 ± 1.6 | 60.6 ± 0.3 |
| Nutritional indices | ||||
| PER | 1.89 ± 0.01 | 1.95 ± 0.01 | 1.92 ± 0.02 | 1.91 ± 0.05 |
| GPE | 31.9 ± 2.11 | 31.4 ± 0.87 | 30.1 ± 0.65 | 31.1 ± 0.77 |
| LER | 4.57 ± 0.02 | 4.71 ± 0.02 | 4.64 ± 0.04 | 4.61 ± 0.12 |
| GLE | 92.2 ± 4.04 | 102.3 ± 2.75 | 95.7 ± 8.31 | 101.7 ± 2.84 |
Biometric indices are given as the mean (n = 15) ± SD. No significant differences were detected (P > 0.05).
Whole body composition % are given as the mean (n = 3) ± SD.
Nutritional indices are given as the mean (n = 3) ± SD.
VSI Viscerosomatic index (%) = 100 × (viscera weight/FBW), HSI Hepatosomatic index (%) = 100 × (liver weight/FBW), CF Condition factor = 100 × (FBW/length3), PER Protein efficiency ratio = (FBW–IBW)/protein intake, GPE (%) Gross protein efficiency = 100 × [(% final body protein × FBW) − (% initial body protein × IBW)]/total protein intake fish, LER Lipid efficiency rate = (FBW − IBW)/lipid intake, GLE (%) Gross lipid efficiency = 100 × [(% final body lipid × FBW) − (% initial body lipid × IBW)]/total lipid intake fish.