Table 7.

Relative abundance of jejunal mucosa-associated microbiota at the species level in nursery pigs fed diets with increasing levels of xylanase

Item	Xylanase, XU per kg feed					SEM	P-value
	0	220	440	880	1,760		Linear	Quad1	0 vs. Xyl2
Prevotella copri	11.94	5.40	11.54	19.66	17.42	10.10	0.240	0.652	0.827
Pelomonas puraquae	9.82	7.14	8.73	4.87	5.70	2.17	0.178	0.408	0.199
Clostridium butyricum	8.56	8.05	1.46	1.82	3.76	3.63	0.332	0.196	0.247
Helicobacter mastomyrinus	5.40	9.89	7.68	3.85	7.85	5.85	0.985	0.765	0.712
Helicobacter rappini	5.35	12.07	7.64	7.27	7.48	7.77	0.930	0.874	0.616
Microbacterium ginsengisoli	4.69	2.71	3.85	2.35	2.84	0.91	0.252	0.289	0.098
Pelomonas aquatica	3.61	2.31	3.13	1.93	2.30	0.81	0.330	0.410	0.202
Propionibacterium acnes	3.60	4.67	5.51	6.13	4.17	2.19	0.908	0.271	0.456
Turicibacter sanguinis	2.46	8.35	0.18	7.26	0.65	6.11	0.630	0.521	0.743
Campylobacter upsaliensis	1.88	0.27	0.42	0.26	0.17	0.69	0.226	0.266	0.051
Clostridium perfringens	1.66	0.85	0.46	0.44	0.31	0.71	0.268	0.398	0.168
Prevotellasp.	1.50	0.58	1.08	1.20	1.49	0.59	0.515	0.517	0.420
Prevotella stercorea	1.50	0.58	1.08	1.20	1.49	0.59	0.515	0.517	0.420
Cupriavidus necator	1.34	0.60	0.96	0.35	0.59	0.18	0.019	0.023	0.001
Arthrobacter russicus	1.31	0.82	0.65	0.56	0.81	0.48	0.594	0.310	0.265
Dialister succinatiphilus	1.04	0.20	1.17	0.47	0.61	0.54	0.742	0.823	0.494
Succinivibrio dextrinosolvens	0.92	0.64	0.83	2.94	1.20	0.73	0.333	0.086	0.515
Massiliasp.	0.90	1.15	1.99	0.89	2.67	1.25	0.213	0.274	0.526
Mitsuokella multacida	0.85	0.46	0.88	0.30	0.57	0.44	0.668	0.618	0.551
Lactobacillus mucosae	0.85	1.58	1.14	0.26	0.49	0.72	0.373	0.820	0.981
Mitsuokella jalaludinii	0.64	0.42	1.07	0.33	0.59	0.34	0.801	0.934	0.926
Roseburia faecis	0.59	0.42	1.10	1.00	0.83	0.68	0.583	0.459	0.612
Helicobactersp.	0.58	1.46	0.10	2.98	0.49	1.57	0.996	0.204	0.499
Pseudomonas caricapapayae	0.57	0.56	0.67	0.52	1.12	0.30	0.185	0.479	0.665
Telluria mixta	0.47	0.83	1.70	0.19	2.20	1.02	0.055	0.346	0.189
Faecalibacterium prausnitzii	0.45	0.81	0.58	0.28	0.49	0.27	0.630	0.719	0.771
Acinetobacter johnsonii	0.45	0.80	1.08	1.22	0.29	0.62	0.636	0.096	0.424
Clostridiumsp.	0.50	2.09	3.24	0.53	0.76	1.30	0.520	0.617	0.470
Campylobacter coli	0.30	0.31	0.24	2.26	0.75	0.77	0.816	0.034	0.537
Massilia varians	0.30	0.22	1.31	0.95	1.17	0.58	0.243	0.740	0.417
Pseudomonas hibiscicola	0.26	0.60	1.40	0.14	1.72	0.80	0.113	0.567	0.233
Lactobacillus delbruecki	0.19	1.76	0.30	0.22	0.38	0.77	0.621	0.792	0.625
Massilia alkalitolerans	0.18	0.28	1.33	0.42	1.04	0.54	0.269	0.891	0.265
Campylobacter hyointestinalis	0.08	0.43	0.40	1.56	0.13	0.71	0.857	0.118	0.451
Massilia indica	0.05	0.75	0.80	0.24	1.74	0.70	0.047	0.506	0.139
Others	26.75	20.23	25.91	24.66	25.83	6.18	0.841	0.854	0.683

Quadratic.

Xylanase (220 + 440 + 880 + 1,760 XU per kg feed).