Table 5.
Effect of xylanase, protease and superdosing phytase on feed intake (FI), body weight gain (BWG), feed conversion ratio (FCR) and livability (Liv) of broilers at 42 days of age.1
Treatment | FI, g | BWG, g | FCR, g/g | Liv, % | |
---|---|---|---|---|---|
CON | 4,467 | 2,506 | 1.783 | 95.71 | |
XYL | 4,400 | 2,513 | 1.751 | 96.86 | |
PRO | 4,393 | 2,508 | 1.752 | 97.43 | |
PHY | 4,474 | 2,509 | 1.784 | 98.00 | |
XYL + PRO | 4,430 | 2,512 | 1.764 | 97.14 | |
XYL + PHY | 4,479 | 2,549 | 1.758 | 97.43 | |
PRO + PHY | 4,495 | 2,534 | 1.774 | 96.57 | |
ALL | 4,483 | 2,563 | 1.749 | 95.14 | |
Std dev | 70 | 44 | 0.029 | 2.31 | |
XYL | + | 4,448 | 2,534 | 1.756b | 96.64 |
− | 4,457 | 2,514 | 1.773a | 96.93 | |
PRO | + | 4,450 | 2,529 | 1.760 | 96.57 |
− | 4,455 | 2,519 | 1.769 | 97.00 | |
SD PHY | + | 4,483a | 2,539a | 1.766 | 96.79 |
− | 4,423b | 2,510b | 1.763 | 96.79 | |
P-value | |||||
XYL | 0.603 | 0.071 | 0.011 | 0.630 | |
PRO | 0.774 | 0.373 | 0.191 | 0.488 | |
SD PHY | 0.001 | 0.011 | 0.575 | 0.985 | |
XYL × PRO | 0.209 | 0.756 | 0.102 | 0.349 | |
XYL × SD PHY | 0.752 | 0.185 | 0.241 | 0.248 | |
PRO × SD PHY | 0.325 | 0.366 | 0.996 | 0.024 | |
XYL × PRO × SD PHY | 0.090 | 0.857 | 0.123 | 0.824 |
CON = control; XYL = xylanase; PRO = protease; PHY = phytase; SD PHY = superdosing phytase.
a,b Means within the same column with different superscripts are different (P < 0.05).
Means represent 48 birds per replicate pen and 7 replicates per treatment.