Table 4.
Effect of TB supplementation on growth performance and physical indexes of juvenile blunt snout bream a .
| Addition level (%) | IW (g) | FW (g) | FCR b | WG (%) c | SGR (%/d) d | SR (%) e | CF (g/cm3) f | VSI (%) g |
|---|---|---|---|---|---|---|---|---|
| 0 | 6.53±0.01 | 15.51±0.44 a | 1.49±0.03 b | 137.64±6.62 a | 1.37±0.04 a | 100±0.00 | 2.18±0.07 | 8.83±0.44 |
| 0.03 | 6.50±0.01 | 17.84±0.33 b | 1.32±0.02 a | 174.44±5.07 b | 1.60±0.03 b | 100±0.00 | 2.21±0.05 | 8.98±0.34 |
| 0.06 | 6.51±0.01 | 18.27±0.55 b | 1.31±0.01 a | 180.58±8.26 b | 1.61±0.02 b | 100±0.00 | 2.06±0.07 | 9.54±0.39 |
| 0.09 | 6.52±0.01 | 16.70±0.24 a b | 1.40±0.03 a b | 155.99±3.79 a b | 1.49±0.02 a b | 100±0.00 | 2.03±0.03 | 8.83±0.22 |
| 0.12 | 6.53±0.02 | 16.70±0.20 a b | 1.44±0.02 a b | 155.83±2.80 a b | 1.46±0.01 a b | 100±0.00 | 2.06±0.04 | 8.22±0.55 |
| 0.15 | 6.52±0.01 | 16.28±0.84 a b | 1.48±0.04 b | 149.80±12.98 a b | 1.42±0.06 a | 100±0.00 | 2.19±0.06 | 8.53±0.27 |
a
All data are means of triplicate, value in the same column with different superscripts are significantly different (P ˂ 0.05).
b
Feed conversion ratio (FCR) = dry feed fed (g)/ wet weight gain (g)
c
Weight gain (WG) (%) = 100 × [final weight (g) -initial weight (g)] /initial weight (g)
d
Specific growth rate (SGR) (%/d) =100×{ [Ln (final body weight (g)) –Ln (initial body weight (g) ) ]/days }
e
Survival rate (SR) (%) =100× (survival fish number/total fish number)
f
Condition factor (CF, g/cm3) = 100 ×body weight (g) / body length (cm)3;
g
Visceral somatic index (VSI, %) = 100 × visceral weight (g) / body weight (g);