. 2020 Nov 2;100(2):820–834. doi: 10.1016/j.psj.2020.10.046

Table 6.

Effects of xylanase (XL) level and its interactions with amino acid (AA) density (10% difference) and additional fat (AF) postpellet in corn-soybean diets with DDGS for Ross 708 male broilers on AMEn and apparent digestibility coefficient (ADC) of GE and CP at 17 d of age.¹^,²

Item 1	Item 2	Item 3	AMEn (kcal/kg)	ADC, %
Item 1	Item 2	Item 3	AMEn (kcal/kg)	GE	CP
XL, BXU/kg
0			2,943^c	65.34	60.71^b
8,000			3,005^a,b	66.49	61.76^a,b
16,000			2,989^b,c	65.89	60.49^b
32,000			3,055^a	67.34	63.00^a
AA density, %
Low			2,994	66.69^a	62.69^a
High			3,002	65.84^b	60.28^b
AF, %
0			2,982^b	66.66^a	60.71^b
1.17			3,014^a	65.87^b	62.26^a
XL × AA density
0	Low		2,920	65.06	60.75^a,b
	High		2,967	65.61	60.67^a,b
8,000	Low		3,026	67.53	64.09^a
	High		2,983	65.46	59.42^b
16,000	Low		2,972	66.11	62.20^a,b
	High		3,006	65.68	58.77^b
32,000	Low		3,059	68.08	63.73^a
	High		3,051	66.60	62.27^a
XL × AF
0		0	2,952^b	66.12^a,b,c	61.02
		1.17	2,934^b	64.66^c	60.40
8,000		0	2,991^b	67.03^a,b	61.02
		1.17	3,018^b	66.0^b,c	62.49
16,000		0	3,017^b	67.12^b	59.86
		1.17	2,960^b	64.66^c	61.11
32,000		0	2,968^b	66.36^a,b,c	60.96
		1.17	3,142^a	68.32^a	65.04
AA density × AF
Low		0	3,028^a	68.13^a	63.82^a
		1.17	2,960^b	65.26^b	61.57^a
High		0	2,936^b	65.19^b	57.61^b
		1.17	3,067^a	66.49^b	62.95^a
CV, %			2.57	1.84	3.42
Effect, P-value²
XL			<0.001	<0.001	0.021
AA density			0.635	0.014	<0.001
AF			0.047	0.011	0.015
XL × AA density			0.170	0.077	0.048
XL × AF			<0.001	<0.001	0.062
AA density × AF			<0.001	<0.001	<0.001
XL × AA density × AF			<0.001	<0.001	<0.001
Linear regressions for XL
Linear			0.002	0.017	0.221
Quadratic			0.837	0.805	0.382
R²			0.43	0.44	0.41
R² adjust			0.34	0.35	0.32

^a–cMeans within a column, not sharing a common superscript, are significantly different (P < 0.05).

Six replicate pens of 22 broilers each per treatment.

Only means for significant interactions are showed (P < 0.05). Morover, the XL × AA × AF interactions were significant (P < 0.05) for AMEn and ADC of GE and ADC of CP (see Figure 2).