Table 8.
Effect of calcium and non-phytate phosphorus (nPP) on growth performance of chickens from 0 to 33 d of age and litter quality and phosphorus retention efficiency at day 33
(Least-square mean values and pooled standard errors)
| Dietary treatments*… | HHHH | HLHL | LHHL | LLHL | sem | P |
|---|---|---|---|---|---|---|
| n | 8 | 8 | 8 | 8 | ||
| ADG (g/d) | 64⋅56 | 63⋅99 | 65⋅65 | 65⋅45 | 1⋅91 | 0⋅420 |
| ADFI (g/d) | 92⋅90 | 92⋅99 | 95⋅05 | 94⋅59 | 2⋅69 | 0⋅344 |
| FCR | 1⋅461 | 1⋅471 | 1⋅465 | 1⋅456 | 0⋅015 | 0⋅261 |
| Mortality (%) | 6⋅89 | 7⋅48 | 5⋅27 | 5⋅22 | 3⋅94 | 0⋅587 |
| n | 4 | 4 | 4 | 4 | ||
| Litter DM day 33 (%) | 48⋅09a,b | 42⋅49a | 51⋅41b | 48⋅01a,b | 4⋅14 | 0⋅035 |
| Litter P content (mg/g) | 10⋅19a | 9⋅00b | 8⋅85b | 8⋅19b | 0⋅95 | 0⋅008 |
| Litter Ca content (mg/g) | 13⋅64a | 11⋅51ab | 11⋅86ab | 10⋅75b | 1⋅27 | 0⋅001 |
| P retention efficiency (%) | 50⋅80b | 59⋅46a | 57⋅78a | 59⋅31a | 3⋅03 | 0⋅002 |
H, high nPP and Ca; L, low nPP and Ca; ADG, average daily gain; ADFI, average daily feed intake; FCR, feed conversion ratio.
a,b Least-square mean values within a row with unlike superscript letters were significantly different (P < 0⋅05).
* See Table 2.