Table 3.

Alpha-diversity of cecal microbiota in piglets across diets and xylanase treatments.¹

Diversity indices	Diets			Xylanases2							P-values
	Corn	Wheat	SEM	Control	XA	XB	XC	XD	XE	SEM	Diet	Xylanase	Diet × Xylanase
Shannon	4.39b	4.91a	0.17	4.61	4.56	4.69	4.57	4.92	4.65	0.29	0.03	0.94	0.67
Simpson	0.84b	0.89a	0.01	0.86	0.85	0.88	0.86	0.89	0.85	0.03	0.04	0.95	0.37

SEM = standard error of the mean.

^{a, b} Mean values within a row with different superscripts were significantly different (P < 0.05).

¹Reported values are least-squares means.

²The basal diets (corn- or wheat-based) were supplemented with or without 75 mg/kg of 1 of 5 types of xylanase supplements (xylanase A [XA], xylanase B [XB], xylanase C [XC], xylanase D [XD], and xylanase E [XE]) originated from various microorganisms.