Table 5.

Relative abundance of jejunal mucosa-associated microbiota at the species 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
Helicobacter rappini	35.93	4.28	4.55	16.88	42.17	12.68	0.542	0.019
Bifidobacterium dentium	11.84	11.60	3.75	16.34	6.23	5.75	0.727	0.975
Lactobacillus mucosae	3.08	5.23	7.82	5.04	2.58	2.38	0.875	0.124
Lactobacillus sp.	3.86	4.56	5.34	4.65	2.16	2.37	0.664	0.391
Lactobacillus delbrueckii	3.41	3.84	5.00	4.66	1.87	2.16	0.747	0.342
Lactobacillus delbrueckii	3.41	3.84	5.00	4.66	1.87	2.16	0.747	0.342
Lactobacillus salivarius	0.44	2.99	11.60	0.32	0.30	5.07	0.857	0.208
Lactobacillus johnsonii	0.11	2.83	4.95	1.23	1.99	1.64	0.624	0.080
Bifidobacterium boum	0.38	6.97	1.52	1.16	0.76	2.47	0.528	0.352
Megasphaera sp.	1.14	2.26	1.75	1.84	1.81	0.75	0.622	0.453
Olsenella profusa	1.15	1.08	0.86	2.18	0.99	0.77	0.754	0.811
Prevotella copri	2.77	0.27	0.96	0.62	1.36	0.89	0.396	0.125
Bifidobacterium thermacidophilum	1.21	0.81	0.66	2.09	0.94	0.86	0.788	0.985
Streptococcus hyointestinalis	0.02	1.86	0.50	0.05	0.47	0.72	0.700	0.486
Ralstonia pickettii	0.50	0.66	0.05	1.53	0.08	0.72	0.986	0.685
Streptococcus parasuis	0.03	2.31	0.06	0.27	0.02	0.77	0.419	0.383
Mitsuokella multacida	0.67	0.46	0.45	0.45	0.66	0.31	0.959	0.467
Helicobacter equorum	0.16	0.03	0.83	0.13	1.50	0.56	0.137	0.486
Faecalibacterium prausnitzii	0.92	0.19	0.66	0.33	0.53	0.37	0.592	0.453
Staphylococcus xylosus	0.04	0.41	0.09	0.02	2.04	0.96	0.137	0.218
Weissella thailandensis	0.12	0.86	0.07	0.22	1.16	0.65	0.375	0.485
Others	30.61	38.54	44.32	29.78	29.06	8.70	0.664	0.256

^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