Table 2.
Basal nutrient content, total P and Ca concentrations (g/kg), and total phytase activity (FTU/kg) in grower and finisher diets for different treatment groups.
| Treatment 1 | NC | NC + 250 | NC + 500 | NC + 1000 | NC + 1500 | PC |
|---|---|---|---|---|---|---|
| Grower | ||||||
| Dry matter | 876.5 | 873.0 | 879.8 | 880.3 | 882.3 | 87.93 |
| Crude ash | 41.1 | 41.2 | 41.5 | 39.8 | 40.2 | 41.1 |
| Crude protein | 180.4 | 177.6 | 179.9 | 179.5 | 179.7 | 180.1 |
| Ether extract | 34.2 | 33.4 | 32.6 | 29.8 | 32.8 | 30.5 |
| Crude fibre | 17.2 | 18.0 | 16.3 | 15.7 | 15.8 | 15.8 |
| Nitrogen free extract | 603.6 | 602.8 | 609.5 | 615.5 | 613.8 | 611.8 |
| Calcium | 5.51 | 5.45 | 5.47 | 5.49 | 5.57 | 6.62 |
| Total phosphorus | 4.82 | 4.74 | 4.75 | 4.78 | 4.83 | 5.69 |
| Phytase activity (FTU/kg) | 187 | 411 | 639 | 1081 | 1574 | 195 |
| Finisher | ||||||
| Dry matter | 871.6 | 867.7 | 869.2 | 871.3 | 868.9 | 869.7 |
| Crude ash | 42.6 | 43.2 | 42.8 | 43.9 | 40.1 | 43.6 |
| Crude protein | 163.2 | 162.5 | 162.6 | 161.3 | 161.1 | 162.8 |
| Ether extract | 28.9 | 25.0 | 21.0 | 23.8 | 22.5 | 22.3 |
| Crude fibre | 19.9 | 19.7 | 20.2 | 21.2 | 21.9 | 21.6 |
| Nitrogen free extract | 617.0 | 617.3 | 622.6 | 621.1 | 623.3 | 619.4 |
| Calcium | 4.94 | 4.92 | 4.98 | 4.95 | 4.94 | 6.09 |
| Total phosphorus | 4.25 | 4.23 | 4.29 | 4.27 | 4.31 | 5.27 |
| Phytase activity (FTU/kg) | 209 | 394 | 699 | 1160 | 1577 | 205 |
1 There were a total of 6 dietary treatments. Diets 1–5 were phosphorus-deficient diets: with 0 (NC), 250, 500, 1000, or 1500 phytase units FTU/kg (RONOZYME HiPhos phytase, DSM, Poland), respectively. A sixth diet (positive control; PC) was formulated with increased di-calcium phosphate to meet the nutrient requirements of the pigs [15].