Table 11 The effect of dietary treatment the relative abundance of selected bacterial genera in ileal and colonic digesta (mean % relative abundance with their standard errors).

Genus	Treatment*				SEM	P valu
Grain preservation method	Dried	OA-preserved	Dried	OA-preserved		Grain	ZnO	Grain x ZnO
Zinc oxide supplementation	No	No	Yes	Yes		Grain	ZnO	Grain x ZnO
Ileum
Lactobacillus	66.06	58.36	60.64	63.51	3.119	0.437	0.993	0.096
Eubacterium	0.69	0.46	1.12	0.38	0.399	0.166	0.782	0.516
Oscillibacter	0.72	0.38	0.41	0.30	0.320	0.463	0.554	0.794
Butyricicoccus	0.33	0.25	0.34	0.55	0.281	0.860	0.565	0.596
Gemmiger	3.47	4.13	3.02	2.69	0.830	0.888	0.198	0.503
Escherichia	1.75	0.36	2.45	0.73	0.592	0.005	0.260	0.684
Anaerobacterium	0.93	0.08	0.55	0.79	0.394	0.219	0.297	0.099
Holdemanella	0.07	0.30	0.16	2.03	0.539	0.049	0.172	0.599
Faecalibacterium	3.05	6.02	6.50	8.66	1.112	0.010	0.004	0.265
Colon
Coprococcus	5.34	4.24	4.51	3.34	0.874	0.172	0.289	0.856
Lactobacillus	59.04	52.15	66.22	60.92	3.076	0.045	0.011	0.683
Sporobacter	0.65^a	2.00^b	1.70^ab	1.33^ab	2.003	0.215	0.435	0.060
Holdemanella	0.16	0.06	0.21	0.12	0.175	0.507	0.665	0.838
Frisingicoccus	0.83^ab	1.68^a	1.13^ab	0.26^b	0.530	0.435	0.122	0.035
Eubacterium	0.77	0.49	1.39	1.55	0.471	0.672	0.048	0.502
Butyricicoccus	0.12	0.46	0.40	0.19	0.276	0.732	0.851	0.213
Gemmiger	7.27^a	1.66^c	6.47^ab	3.86^bc	1.019	< 0.001	0.087	0.027
Ruminococcus	0.90	2.37	1.35	1.68	0.581	0.088	0.927	0.269
Faecalibacterium	1.76^a	15.61^c	4.07^b	5.41^b	1.613	< 0.001	0.576	< 0.001
Mediterraneibacter	0.09	2.27	0.65	1.94	0.569	0.005	0.203	0.140
Clostridium	0.14	0.21	0.26	0.36	0.227	0.652	0.496	0.955

* A total of seven replicates were used per treatment group.
^a,b,cMean values within a row with unlike superscript letters were significantly different (P < 0.05).

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