Table 7.

Effects of dEB and CA on the composition of the ileal microbiota in weaned piglets¹

	0% CA		0.3% CA
	dEB, mEq/kg		dEB, mEq/kg			P-value
Item	−50	250	−50	250	SEM	CA2	dEB	CA×dEB
Phylum, %
Firmicutes	42.067	67.994	38.263	68.067	5.20	0.859	0.013	0.854
Proteobacteria	57.706	31.559	61.555	31.774	5.20	0.847	0.013	0.863
Actinobacteria	0.073	0.201	0.055	0.088	0.03	0.214	0.132	0.368
Bacteroidetes	0.127	0.167	0.077	0.045	0.02	0.094	0.938	0.476
Cyanobacteria	0.006b	0.053a	0.014b	0.006b	0.01	0.106	0.102	0.028
Fusobacteria	0.005	0.013	0.019	0.013	0.00	0.463	0.924	0.435
Spirochaetes	0.004	0.007	0.005	0.004	0.00	0.606	0.632	0.259
Chlorobi	0.000	0.000	0.003	0.000	0.00	0.273	0.273	0.273
Saccharibacteria	0.008a	0.001b	0.001b	0.003b	0.00	0.068	0.096	0.007
Ignavibacteriae	0.001	0.000	0.002	0.000	0.00	0.516	0.241	0.516
Others	0.004	0.005	0.005	0.000	0.00	0.358	0.295	0.078
Genus, %
Clostridium_sensu_stricto_1	22.350	24.500	16.900	47.586	4.850	0.341	0.083	0.129
Lactobacillus	1.050b	24.443a	1.529b	0.857b	3.722	0.097	0.103	0.085
Actinobacillus	51.350	27.386	53.029	29.386	5.199	0.854	0.024	0.987
Romboutsia	8.083	3.214	14.029	6.414	1.934	0.237	0.111	0.719
Turicibacter	3.850	6.429	1.329	9.786	1.423	0.880	0.055	0.292
Sarcina	0.200	4.514	0.057	0.914	0.712	0.167	0.061	0.200
Escherichia-Shigella	1.583	1.743	3.929	0.214	0.654	0.751	0.176	0.142
Streptococcus	2.083	2.271	1.014	0.257	0.357	0.033	0.679	0.494
Veillonella	2.550	0.400	1.271	0.514	0.327	0.346	0.025	0.262
Helicobacter	0.003	0.754	0.045	0.003	0.185	0.347	0.347	0.295
Others	6.883	4.371	6.857	4.014	0.474	0.821	0.004	0.845

¹Data were means of seven piglets per treatment.

²CA × dEB = the interaction between citric acid and dietary electrolyte balance.

^a,bWithin a row, means with different superscripts differ (P < 0.05).