. 2017 Feb 10;3(2):121–126. doi: 10.1016/j.aninu.2017.02.001

Table 4.

Effect of xylanase, protease and superdosing phytase on feed intake (FI), body weight gain (BWG), feed conversion ratio (FCR), livability (Liv) and tibia ash (TA) of broilers at 21 days of age.¹

Treatment		FI, g	BWG, g	FCR, g/g	Liv, %	TA, %
CON		1,011	647	1.551	97.71	52.28^ab
XYL		1,015	653	1.543	98.57	51.49^ab
PRO		1,006	652	1.537	98.86	52.29^ab
SD PHY		1,037	665	1.560	98.86	51.32^ab
XYL + PRO		1,003	655	1.526	98.00	52.27^ab
XYL + SD PHY		1,042	668	1.559	98.57	52.60^a
PRO + SD PHY		1,034	671	1.527	97.43	52.32^ab
ALL		1,024	669	1.521	97.43	50.62^b
Std dev		28	20	0.037	1.88	1.69
XYL	+	1,021	661	1.537	98.14	51.75
XYL	−	1,022	659	1.544	98.22	52.05
PRO	+	1,017	662	1.528^a	97.93	51.88
PRO	−	1,026	658	1.553^b	98.43	51.92
SD PHY	+	1,034^a	668^a	1.542	98.07	51.72
SD PHY	−	1,009^b	652^b	1.539	98.29	52.08
P-value
XYL		0.886	0.594	0.474	0.887	0.498
PRO		0.133	0.472	0.008	0.354	0.917
SD PHY		0.001	0.004	0.785	0.704	0.420
XYL × PRO		0.364	0.708	0.791	0.510	0.222
XYL × SD PHY		0.805	0.708	0.743	0.904	0.833
PRO × SD PHY		0.895	0.979	0.281	0.143	0.328
XYL × PRO × SD PHY		0.726	0.936	0.963	0.357	0.042

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 50 birds per replicate pen and 7 replicates per treatment for FI, BWG, Liv and FCR, and 2 birds per replicate and 7 replicates per treatment for TA.