Table 4.

Relative abundance of jejunal mucosa-associated microbiota at the genus level in nursery pigs fed diets with increasing levels of xylanase and β-glucanase combination (XG)^a

Item	XG, (TXU/TGU)/kg					SEMb	P value
	0	280/125	560/250	840/375	1,120/500		Linear	Quadratic
Lactobacillus	14.90	28.97	50.09	27.68	14.99	11.88	0.976	0.043
Helicobacter	36.09	4.49	6.40	17.01	43.67	12.54	0.497	0.018
Bifidobacterium	13.42	19.40	5.99	19.59	7.93	6.67	0.616	0.745
Streptococcus	2.87	9.03	6.78	3.70	3.29	2.86	0.537	0.123
Olsenella	1.89	1.69	1.47	2.63	1.71	1.05	0.866	0.989
Megasphaera	1.19	2.28	1.79	1.87	1.87	0.77	0.626	0.492
Prevotella	3.21	0.34	1.18	0.63	1.61	1.02	0.383	0.122
Staphylococcus	0.09	0.68	0.32	0.04	4.51	2.13	0.128	0.219
Mitsuokella	0.85	0.62	0.76	1.09	1.00	0.40	0.559	0.758
Weissella	0.24	1.86	0.08	0.57	1.21	0.86	0.766	0.907
Blautia	0.82	0.70	1.52	0.34	0.58	0.54	0.590	0.495
Dialister	0.97	0.48	0.75	0.73	0.86	0.35	0.978	0.489
Faecalibacterium	1.22	0.20	0.80	0.56	0.57	0.45	0.515	0.477
Roseburia	0.96	0.46	0.82	0.39	0.46	0.44	0.444	0.824
Solobacterium	0.79	0.56	0.52	0.81	0.34	0.27	0.457	0.892
Ralstonia	0.50	0.66	0.05	1.53	0.08	0.72	0.986	0.685
Others	19.97	26.16	20.68	19.40	16.74	6.49	0.530	0.587

^aExperimental unit was a pig and each level had 4 replicates (totaling 20 observations), representing the approximate median BW of each level

^bSEM Standard error of the means