Table 3.

Relative abundance of jejunal mucosa-associated microbiota at the phylum level in nursery pigs fed diets with β-glucanase

	β-Glucanase, U/kg feed1					P-value
Items	0.0	200	400	600	SEM	Linear	Quadratic	0 vs. others
Proteobacteria	35.08	39.80	19.66	33.22	9.67	0.535	0.629	0.689
Firmicutes	33.12	34.26	17.77	37.93	9.94	0.962	0.328	0.776
Tenericutes	25.72	22.53	31.88	17.33	11.75	0.768	0.632	0.898
Bacteroidetes	8.89	5.83	36.73	11.83	5.03	0.077	0.029	0.108
Spirochaetes	9.67	5.14	2.03	3.99	3.09	0.237	0.359	0.174
Others	0.06	0.14	0.04	0.07	0.06	0.822	0.655	0.675
F:B ratio2	6.23	16.07	0.42	8.04	3.83	0.246	0.097	0.439

¹Four supplemental levels of β-glucanase (N = 40 total, n = 10 per supplemental level).

²F:B = Firmicutes/Bacteroidetes.