Table 7.
Effects of supplementing exogenous enzymes in pig diets at finishing productive stage on animal performance.
| Variable | Phytase | Xylanase | Mannanase | Protease | Combination ofexogenous enzymes | Control | |
|---|---|---|---|---|---|---|---|
| Studies | n | 5 | 4 | 7 | 5 | 11 | 23 |
| Number of animals | Mean ± SD | 120.8 ± 144.7 | 39.5 ± 9.85 | 29.43 ± 16.28 | 41.60 ± 6.69 | 717.27 ± 9.69 | 49.82 ± 73.87 |
| Min – Max | 8 – 279 | 30 - 48 | 16 – 52 | 32 – 48 | 8 – 32 | 8 – 279 | |
| CV (%) | 119.78 | 24.93 | 55.31 | 16.09 | 56.08 | 148.26 | |
| Dosage of Enzyme in the diet, (g/kg) | Mean ± SD | 1.34 ± 0.88 | 1.74 ± 2.90 | 1.14 ± 0.33 | 0.84 ± 0.48 | 2.25 ± 1.87 | |
| Min - Max | 0.54 – 2.79 | 0.21 – 6.08 | 0.53 – 1.61 | 0.405 – 1.37 | 0.525 – 6.795 | ||
| CV (%) | 65.93 | 167.0 | 28.66 | 56.66 | 83.07 | ||
| Dosage of Enzyme in the diet, (g/d) | Mean ± SD | 0.70 ± 0.27 | 1.10 ± 1.93 | 0.43 ± 0.13 | 0.32 ± 0.16 | 1.15 ± 1.19 | |
| Min – Max | 0.50 – 1.0 | 0.10 – 4.0 | 0.20 – 0.60 | 0.20 – 0.50 | 0.40 – 4.50 | ||
| CV (%) | 39.12 | 175.81 | 29.25 | 51.35 | 103.09 | ||
| Dosage of Enzyme in the diet, (g/kg LW0.75) | Mean ± SD | 0.11 ± 0.07 | 0.16 ± 0.28 | 0.043 ± 0.013 | 0.045 ± 0.019 | 0.16 ± 0.17 | |
| Min – Max | 0.055 – 0.22 | 0.019 – 0.58 | 0.018 – 0.055 | 0.024 – 0.065 | 0.053 – 0.647 | ||
| CV (%) | 59.89 | 171.89 | 31.42 | 43.51 | 108.41 | ||
| Initial body weight, (kg) | Mean ± SD | 37.72 ± 32.53 | 27.08 ± 4.73 | 82.34 ± 14.25 | 49.40 ± 16.96 | 44.00 ± 22.07 | 53.37 ± 24.15 |
| Min – Max | 10 – 75.8 | 23 33.9 | 56.15 – 92.7 | 28.78 – 68.45 | 10 – 69.1 | 10 – 92.7 | |
| CV (%) | 86.24 | 17.45 | 17.30 | 34.33 | 50.14 | 17.30 | |
| Animal performance | |||||||
| Average Daily Feed lntake, (kg/d) | Mean ± SD | 0.39 ± 0.084 | 0.41 ± 0.05 | 0.30 ± 0.037 | 0.33 ± 0.03 | 0.40 ± 0.05 | 0.34 ± 0.07 |
| Min – Max | 0.30 – 0.49 | 0.38 – 0.47 | 0.265 – 0.383 | 0.312 – 0.374 | 0.329 – 0.50 | 0.26 – 0.50 | |
| CV (%) | 21.45 | 12.05 | 12.49 | 9.05 | 13.50 | 20.57 | |
| Average Daily Gain, (kg/d) | Mean ± SD | 0.68 ± 0.18 | 0.80 ± 0.06 | 0.80 ± 0.02 | 0.88 ± 0.05 | 0.80 ± 0.20 | 0.80 ± 0.14 |
| Min – Max | 0.483 – 0.84 | 0.724 – 0.865 | 0.772 – 0.837 | 0.822 – 0.937 | 0.392 – 1.05 | 0.398 – 1.06 | |
| CV (%) | 26.17 | 7.31 | 2.66 | 5.93 | 25.59 | 17.86 | |
| Gain: Feed, (kg/kg) | Mean ± SD | 0.39 ± 0.08 | 0.41 ± 0.05 | 0.030 ± 0.04 | 0.33 ± 0.03 | 0.397 ± 0.05 | 0.34 ± 0.07 |
| Min – Max | 0.301 – 0.49 | 0.381 – 0.47 | 0.265 – 0.383 | 0.312 – 0.374 | 0.329 – 0.50 | 0.26 – 0.50 | |
| CV (%) | 21.45 | 12.05 | 12.49 | 9.05 | 13.50 | 20.57 | |
| Digestibility of Dry Matter, (g/kg) | Mean ± SD | 802.0 ± 1.41 | 759.1 ± 6.93 | 836.5 ± 34.62 | 722.9 ± 3.47 | 811.5 ± 29.58 | 791.1 ± 45.35 |
| Min–Max | 801–803 | 754.2 – 764 | 763.5 – 861.2 | 720.4 –725.3 | 777.2 –845.9 | 725.2 – 849.4 | |
| CV (%) | 0.18 | 0.91 | 4.14 | 0.48 | 3.65 | 5.73 |
SD: Standard deviation; Minimum: Min; Maximum: Max; CV: Coefficient of variation.