Table 4.
Growth performance and economic analysis of Nile tilapia-fed diets supplemented with yeast (Saccharomyces cerevisiae) for 90 days during the winter season.
| Parameters | T1 (control) |
T2 (5 g/kg diet) |
T3 (10 g/kg diet) |
T4 (20 g/kg diet) |
|---|---|---|---|---|
| IBW (g) | 5.17 ± 0.33 | 5.36 ± 0.47 | 5.78 ± 0.66 | 4.98 ± 0.27 |
| FBW(g) | 57.12 ± 2.98 | 57.81 ± 3.52 | 62.98 ± 7.18 | 65.68 ± 3.03 |
| WG (g) | 51.62 ± 3.28b | 52.45 ± 3.35a,b | 57.20 ± 6.54a,b | 60.70 ± 3.00a |
| ADG (g/day) | 0.57 ± 0.04 | 0.58 ± 0.04 | 0.64 ± 0.07 | 0.67 ± 0.03 |
| SGR (%/day) | 2.60 ± 0.12b | 2.64 ± 0.10b | 2.65 ± 0.03b | 2.87 ± 0.07a |
| FCR | 1.52 ± 0.14 | 1.63 ± 0.24 | 1.60 ± 0.39 | 1.49 ± 0.16 |
| Survival rate (%) | 78.87 ± 5.09 | 76.67 ± 3.35 | 81.10 ± 1.90 | 84.43 ± 5.09 |
| ECR (€ kg−1) | 1.345 ± 0.123c | 1.816 ± 0.262b,c | 2.141 ± 0.523a,b | 2.661 ± 0.278a |
| EPI (€ fish−1) | 0.069 ± 0.004a | 0.058 ± 0.004b | 0.051 ± 0.006b | 0.026 ± 0.001c |
Note: Data are given as mean ± SD. Different superscript lowercase letters indicate significant differences (p < 0.05). Selling price = 2.221 (€ Kg−1).
Abbreviations: ECR, economic conversion ratio; EPI, economic profit index.