Item | Feeding regimens | Protease level | Feeding regimens × Protease level | P-value | SEM | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FR1 | FR2 | FR3 | − VE | + VE | FR1 − VE | FR1 + VE | FR2 − VE | FR2 + VE | FR3 − VE | FR3 + VE | FR | Protease | Interaction | ||
Total return (USD)/bird | 2.98 | 2.93 | 2.94 | 2.99 | 2.91 | 3.01 | 2.96 | 2.99 | 2.86 | 2.98 | 2.89 | 0.81 | 0.26 | 0.90 | 0.03 |
Net profit (USD) | 1.23 | 1.20 | 1.18 | 1.24 | 1.17 | 1.24 | 1.22 | 1.23 | 1.17 | 1.23 | 1.13 | 0.85 | 0.37 | 0.89 | 0.03 |
Total costs (USD) | 1.75 | 1.72 | 1.75 | 1.75 | 1.73 | 1.76 | 1.74 | 1.75 | 1.68 | 1.74 | 1.76 | 0.49 | 0.28 | 0.40 | 0.01 |
Feed costs (USD) | 1.27 | 1.24 | 1.27 | 1.28 | 1.25 | 1.28 | 1.26 | 1.28 | 1.21 | 1.27 | 1.28 | 0.49 | 0.28 | 0.40 | 0.01 |
Economic efficiency | 0.96 | 0.97 | 0.92 | 0.96 | 0.94 | 0.96 | 0.96 | 0.96 | 0.97 | 0.97 | 0.88 | 0.78 | 0.59 | 0.73 | 0.02 |
Feed cost/kg gain (USD) | 0.64 | 0.64 | 0.65 | 0.64 | 0.65 | 0.64 | 0.64 | 0.64 | 0.64 | 0.64 | 0.67 | 0.75 | 0.69 | 0.63 | 0.01 |
Performance index% | 127.29 | 122.35 | 111.15 | 124.38 | 116.14 | 128.11 | 126.46 | 124.10 | 120.59 | 120.92 | 101.37 | 0.15 | 0.21 | 0.48 | 3.26 |