Table 7
Effect of EM and feeding regime on economic efficiency of tilapia juveniles.
| Items & Treatments | Total cost (L.E) | Variable cost (L.E) | Production (kg) | Net profit (L.E) | Total Revenue (L.E) | Value added (L.E) | Operatin Ratio | Return On Costs |
|---|---|---|---|---|---|---|---|---|
| Effect of EM on economic efficiency regardless feeding regime | ||||||||
| A (0% EM) | 27.26 | 19.24 | 1.786 | 11.85 | 39.28 | 20.04 | 0.69 | 1.44 |
| B (2% EM) | 28.25 | 20.25 | 1.857 | 12.46 | 40.71 | 20.46 | 0.69 | 1.44 |
| C (4% EM) | 29.15 | 21.15 | 1.973 | 14.24 | 43.42 | 22.27 | 0.67 | 1.49 |
| Effect of feeding regime on economic efficiency regardless EM | ||||||||
| 2/3 of the meal at the morning | 28.99 | 20.97 | 1.900 | 12.93 | 41.92 | 20.95 | 0.69 | 1.45 |
| 2/3 of the meal at the afternoon | 27.45 | 19.45 | 1.840 | 12.90 | 40.35 | 20.90 | 0.68 | 1.47 |
| Effect of interaction between EM and feeding regime on economic efficiency | ||||||||
| (A1) | 28.63 | 20.58 | 1.839 | 11.48 | 40.45 | 19.87 | 0.71 | 1.41 |
| (A2) | 25.90 | 17.90 | 1.733 | 12.22 | 38.12 | 20.22 | 0. 68 | 1.46 |
| (B1) | 29.36 | 21.36 | 1.952 | 13.57 | 42.94 | 21.57 | 0.68 | 1.46 |
| (B2) | 27.15 | 19.15 | 1.763 | 11.34 | 38.49 | 19.34 | 0.70 | 1.42 |
| (C1) | 28.99 | 20.99 | 1.925 | 13.40 | 42.39 | 21.40 | 0.68 | 1.46 |
| (C2) | 29.31 | 21.31 | 2.020 | 15.14 | 44.46 | 23.15 | 0.65 | 1.52 |
A1: fish fed a control diet with 2/3 of amount daily meal in the morning, A2: fish fed a control diet with 2/3 of amount daily meal in the afternoon, B1 fish fed dietary 2% EM supplemented with 2/3 of amount daily meal in the morning, B2: fish fed dietary 2% EM supplemented with 2/3 of amount daily meal in the afternoon, C1: fish fed dietary 4% EM supplemented with 2/3 of amount daily meal in the morning and C2: fish fed dietary 4% EM supplemented with 2/3 of amount daily meal in the afternoon.
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