Table 3.

Effect of amylase supplementation on growth performance of broiler chickens in different growth phases.¹

Growth phase day after hatching:	Day 0 to 11		Day 11 to 21		Day 21 to 42		Day 42 to 56		SEM	P-value
Amylase, KNU/kg:	0	80	0	80	0	80	0	80		Amylase	Phase	A × P
Initial BW, g	52	52	403	403	1,145	1,145	3,113	3,112	0.6	0.689	<0.001	0.907
Final BW, g	295	298	1,072	1,089	3,254	3,313	4,601	4,685	17.5	0.003	<0.001	0.105
BW gain, g/bird	243	245	668	686	2,109	2,167	1,488	1,573	17.0	0.002	<0.001	0.081
Feed intake, g/bird	369	365	1,112	1,146	3,934	3,870	4,540	4,527	46.8	0.726	<0.001	0.774
G: F, g/kg	658	672	601	598	536	560	328	348	6.0	0.003	<0.001	0.147

¹Data are least square means of 8 replicates cages; A, amylase; P, phase.