Table 3.
Growth performance of the pigs supplemented with monocalcium phosphate (MCP) or phytase1
| Diet | IBW2, kg | FBW2, kg | ADG2, g/d | ADFI2, g/d | Gain: feed, g/kg | |
|---|---|---|---|---|---|---|
| MCP, % | ||||||
| 0.25 | 7.4 | 14.9 | 359 | 521 | 691 | |
| 0.60 | 7.4 | 16.0 | 410 | 563 | 729 | |
| 0.95 | 7.4 | 16.8 | 447 | 591 | 757 | |
| Phytase, U/kg | ||||||
| 500 | 7.4 | 16.9 | 451 | 602 | 749 | |
| 1,000 | 7.4 | 17.6 | 484 | 628 | 771 | |
| 2,000 | 7.4 | 17.7 | 490 | 627 | 782 | |
| 3,000 | 7.4 | 17.7 | 490 | 624 | 787 | |
| Ca/P ratio | ||||||
| 1.05 | 7.4 | 17.5 | 480 | 618 | 778 | |
| 1.20 | 7.4 | 17.4 | 477 | 623 | 766 | |
| SD3 | 0.09 | 0.43 | 20 | 26 | 19 | |
| P value | ||||||
| MCP | L4 | 0.28 | <0.01 | <0.01 | <0.01 | <0.01 |
| Q4 | 0.60 | 0.46 | 0.52 | 0.61 | 0.63 | |
| Phytase | L5 | 0.71 | <0.01 | <0.01 | <0.01 | <0.01 |
| Q5 | 0.40 | <0.01 | <0.01 | <0.01 | <0.01 | |
| Ca/P ratio6 | 0.68 | 0.64 | 0.59 | 0.55 | <0.05 |
There were six replicates of eight pigs.
IBW, initial body weight; FBW, final body weight; ADG, average daily gain; ADFI, average daily feed intake.
SD, standard deviation.
Linear and quadratic effects of monocalcium phosphate.
Linear and quadratic effects of phytase.
The effect of Ca/P ratio compares phytase diets between the ratios of 1.05 and 1.20, and no significant interaction between phytase and the Ca/P ratio was observed.