Table 3.
Growth performance, feed utilization, survival, and organosomatic indexes of tilapia fed graded levels of Persicaria odorata for 10 weeks.
| Parameters | PO0 | PO15 | PO30 | PO50 | SEM | Linear | Quadratic |
|---|---|---|---|---|---|---|---|
| Growth and feed utilization | |||||||
| IBW (g/fish) | 7.78 ± 0.02 | 7.77 ± 0.01 | 7.78 ± 0.01 | 7.77 ± 0.01 | < 0.001 | 0.275 | 1.000 |
| FBW (g/fish) | 76.28 ± 3.30 | 81.12 ± 1.34∗ | 84.16 ± 1.77∗ | 81.64 ± 2.09∗ | 5.045 | 0.011 | 0.022 |
| WG (g/fish) | 68.50 ± 3.30 | 73.35 ± 1.34∗ | 76.39 ± 1.77∗ | 73.87 ± 2.10∗ | 5.060 | 0.011 | 0.022 |
| SGR (%/day) | 3.26 ± 0.06 | 3.35 ± 0.02∗ | 3.40 ± 0.03∗ | 3.36 ± 0.04∗ | 0.001 | 0.011 | 0.043 |
| FCR | 0.95 ± 0.03 | 0.93 ± 0.02 | 0.95 ± 0.02 | 1.02 ± 0.04∗ | 0.002 | 0.009 | 0.028 |
| PER | 1.87 ± 0.01 | 1.99 ± 0.01∗ | 2.14 ± 0.02∗ | 1.96 ± 0.01∗ | 0.025 | < 0.001 | < 0.001 |
| PPV (%) | 23.94 ± 0.21 | 26.96 ± 0.09∗ | 27.63 ± 0.32∗ | 25.76 ± 0.12∗ | 0.229 | < 0.001 | < 0.001 |
| Survival (%) | 98.33 ± 2.89 | 98.33 ± 2.89 | 100.00 ± 0.00 | 100.00 ± 0.00 | < 0.001 | 0.592 | 0.823 |
| Organosomatic indexes | |||||||
| K (g/cm3) | 1.93 ± 0.14 | 1.96 ± 0.22 | 1.97 ± 0.13 | 1.82 ± 0.14 | 0.027 | 0.203 | 0.109 |
| HSI (%) | 1.57 ± 0.44 | 1.63 ± 0.51 | 1.68 ± 0.46 | 1.75 ± 0.53 | 0.236 | 0.428 | 0.953 |
| VSI (%) | 7.55 ± 0.89 | 7.85 ± 1.65 | 8.18 ± 0.72 | 8.39 ± 0.99 | 1.249 | 0.097 | 0.902 |
Note: Growth and feed utilization are mean ± SD (n = 60; 20 fish from each tank). Organosomatic indexes are mean ± SD from three replicate treatments (n = 9; three fish from each tank). K, condition factor.
Abbreviations: FBW, final body weight; FCR, feed conversion ratio; HSI, hepatosomatic index; IBW, initial body weight; PER, protein efficiency ratio; SGR, specific growth rate; VSI, viscerosomatic index; WG, weight gain.
∗Significant differences from the control group (PO0, Dunnett's test, p < 0.05).