Table 8. Effects of different levels of organic chromium and SeMet cocktails on fecal microbiota at the phylum level in broilers

Items	CON¹⁾	CS4	CS8	SE	p-value
Firmicutes	73.532^a	64.199^b	65.392^b	1.036	< 0.001
Bacteroidota	9.602^b	30.862^a	29.275^a	1.673	< 0.001
Proteobacteria	15.027^a	4.021^b	4.384^b	2.002	0.003
Desulfobacterota	0.252	0.672	0.496	0.151	0.185
Actinobacteriota	1.346^a	0.125^b	0.215^b	0.204	0.002
Deferribacterota	0.003	0.014	0.031	0.010	0.162
Cyanobacteria	0.010	0.024	0.124	0.059	0.357
Campilobacterota	0.110	0.006	0.033	0.061	0.483
Deinococcota	0.027	0.040	0.019	0.020	0.771
Rest	0.091	0.037	0.031	0.032	0.376

CON, basal diet; CS4, CON + 0.2 ppm selenomethionine and 0.2 ppm organic chromium; CS8, CON + 0.4 ppm selenomethionine and 0.4 ppm organic chromium.
Means within column with different superscripts differ significantly (p < 0.05).
SeMet, selenomethionine.