Table 7.

Effect of AFEX wheat straw and a recombinant fibrolytic enzyme on apparent total tract digestibility of wethers (n = 8 per treatment)

	Control		AFEX1			P-value
Item	Enz− 2	Enz+ 3	Enz−	Enz+	SEM	Diet	Enz4	Diet × Enz
DMI, kg/d	1.42	1.41	1.59	1.33	0.122	0.64	0.21	0.25
Digestibility, %
DM	69.6	69.3	67.8	67.6	1.93	0.20	0.85	0.97
OM	72.2	71.6	69.5	69.5	1.87	0.09	0.81	0.81
CP	74.3	73.9	69.4	69.8	1.16	<0.001	0.99	0.67
NDF	45.6	42.1	51.1	48.9	3.84	0.05	0.32	0.81
ADF	46.0	42.1	50.0	50.6	3.72	0.03	0.52	0.39

¹AFEX = ammonia fiber expansion treatment (30% AFEX straw pellets on a dietary DM basis replacing alfalfa hay pellets).

²Enz− = diet without enzyme.

³Enz+ = diet with enzyme.

⁴Enz = recombinant fibrolytic enzyme treatment effect (XYL10C, a β-1,4-xylanase, EC 3.2.1.8, GH10 from Aspergillus niger).