Table 6.
Effects of supplementing exogenous enzymes in pig diets at growing productive stage on animal performance.
| Variable | Phytase | Mannanase | Protease | Combination ofexogenous enzymes | Control | |
|---|---|---|---|---|---|---|
| Studies | n | 15 | 18 | 3 | 16 | 34 |
| Number of animals | Mean ± SD | 54.27 ± 93.24 | 35.67 ± 10.31 | 39.33 ± 7.51 | 34.50 ± 15.31 | 46.65 ± 61.06 |
| Min – Max | 8 – 279 | 24 – 52 | 35 – 48 | 8 – 48 | 8 – 279 | |
| CV (%) | 171.82 | 28.91 | 19.08 | 44.38 | 130.90 | |
| Dosage of Enzyme in the diet, (g/kg) | Mean ± SD | 2.57 ± 3.83 | 1.05 ± 0.55 | 0.27 ± 0.13 | 1.08 ± 0.82 | |
| Min – Max | 0.23 – 11.88 | 0.33 – 2.83 | 0.19 – 0.42 | 0.037 – 2.48 | ||
| CV (%) | 149.45 | 52.71 | 48.42 | 75.69 | ||
| Dosage of Enzyme in the diet, (g/d) | Mean ± SD | 2.52 ± 4.12 | 0.52 ± 0.30 | 0.15 ± 0.04 | 0.61 ± 0.53 | |
| Min – Max | 0.25 – 12.50 | 0.20 – 1.60 | 0.125 – 0.20 | 0.05 – 2.00 | ||
| CV (%) | 163.33 | 58.73 | 28.87 | 86.78 | ||
| Dosage of Enzyme in the diet, (g/kg LW0.75) | Mean ± SD | 0.29 ± 0.43 | 0.07 ± 0.03 | 0.023 ± 0.009 | 0.08 ± 0.65 | |
| Min – Max | 0.03 – 1.33 | 0.03 – 0.161 | 0.018 – 0.033 | 0.009 – 0.226 | ||
| CV (%) | 147.44 | 43.49 | 39.78 | 80.87 | ||
| Initial body weight, (kg) | Mean ± SD | 18.68 ± 5.65 | 40.37 ± 15.20 | 25.66 ± 2.70 | 29.49 ± 20.77 | |
| Min – Max | 10.32 – 30.58 | 23.50 – 60.50 | 24.09 – 28.78 | 5.40 – 56.90 | ||
| CV (%) | 30.26 | 37.66 | 10.52 | 50.44 | ||
| Animal performance | ||||||
| Average Daily Feed lntake, (kg/d) | Mean ± SD | 1.17 ± 0.42 | 2.08 ± 0.50 | 1.74 ± 0.32 | 1.66 ± 0.85 | 1.75 ± 0.63 |
| Min – Max | 0.90 – 2.12 | 1.58 – 2.86 | 1.55 – 2.10 | 0.73 – 2.76 | 0.69 – 2.83 | |
| CV (%) | 35.74 | 23.87 | 18.22 | 51.32 | 36.06 | |
| Average Daily Gain, (kg/d) | Mean ± SD | 0.62 ± 0.16 | 0.80 ± 0.09 | 0.81 ± 0.12 | 0.73 ± 0.21 | 0.73 ± 0.18 |
| Min – Max | 0.44 – 0.99 | 0.69 – 0.96 | 0.72 – 0.94 | 0.39 – 0.95 | 0.36 – 1.03 | |
| CV (%) | 26.35 | 10.62 | 15.06 | 28.95 | 24.19 | |
| Gain: Feed, (kg/kg) | Mean ± SD | 0.52 ± 0.04 | 0.40 ± 0.06 | 0.47 ± 0.02 | 0.50 ± 0.14 | 0.43 ± 0.08 |
| Min – Max | 0.45 – 0.58 | 0.32 – 0.50 | 0.45 – 0.49 | 0.34 – 0.72 | 0.32 – 0.60 | |
| CV (%) | 8.49 | 16.27 | 4.54 | 27.29 | 18.71 | |
| Digestibility of Dry Matter, (%) | Mean ± SD | 862.5 ± 7.4 | 827.4 ± 24.5 | 754.2 ± 3.61 | 785.3 ± 59.8 | 804.7 ± 46.8 |
| Min – Max | 853 – 871 | 791 – 866.9 | 751.6 – 756.7 | 672 – 860 | 660 – 870 | |
| CV (%) | 0.85 | 2.96 | 0.48 | 7.61 | 5.81 |
SD: Standard deviation; Minimum: Min; Maximum: Max; CV: Coefficient of variation.