Table 2. Growth performance and feed utilization of red seabream (Pagrus major) fed the six experimental diets for 8 weeks
| FBW1) | WG2) | SGR3) | FCR4) | PER5) | CF6) | HSI7) |
Con | 45.3 ± 2.2b | 496 ± 30b | 1.98 ± 0.06b | 1.44 ± 0.09a | 1.55 ± 0.09b | 1.52 ± 0.20c | 2.03 ± 0.85a |
P25 | 51.4 ± 2.6a | 577 ± 48a | 2.12 ± 0.08a | 1.25 ± 0.15ab | 1.78 ± 0.22ab | 1.92 ± 0.28a | 1.55 ± 0.64ab |
P50 | 53.6 ± 0.9a | 600 ± 18a | 2.16 ± 0.03a | 1.06 ± 0.04b | 2.13 ± 0.09a | 1.84 ± 0.13ab | 1.59 ± 0.56ab |
P100 | 53.8 ± 1.7a | 601 ± 21a | 2.16 ± 0.03a | 1.10 ± 0.18b | 2.10 ± 0.38a | 1.66 ± 0.12bc | 1.44 ± 0.38ab |
P200 | 53.5 ± 3.9a | 603 ± 36a | 2.17 ± 0.06a | 1.09 ± 0.17b | 2.12 ± 0.32a | 1.79 ± 0.12ab | 1.50 ± 0.67ab |
BP100 | 46.8 ± 1.8b | 509 ± 28b | 2.01 ± 0.05b | 1.24 ± 0.09ab | 1.85 ± 0.13ab | 1.77 ± 0.26ab | 1.16 ± 0.33b |
Values are mean of triplicate groups and presented as mean ± SD.
Values with different superscripts in the same column are significantly different (p < 0.05).
Final body weight (FBW, g/fish).
Weight gain (WG, %) = 100 × [Final body weight (g) – Initial body weight (g)] / Initial body weight(g).
Specific growth rate (SGR, % day–1) = 100 × (ln final body weight − ln initial body weight) / Days.
Feed conversion ratio (FCR) = Dry feed intake (g) / [Final body weight (g) – Initial body weight (g)].
Protein efficiency ratio (PER) = [Final body weight (g) – Initial body weight (g)] / Protein intake (g).
Conditional factor (CF, g/cm3) = 100 × Fish weight (g) / Fish length (cm)3.
Hepatosomatic index (HIS, %) = 100 × Liver weight (g)/ Fish weight (g).