TABLE 4.

Identification of microbial genera (including MAGs) and genes significantly correlated with feed conversion ratio.

Domain	Genus	Mean low	Mean high	VIPa	Coef.a	Geneb
Feed conversion ratio
Bacteria	Succiniclasticum	5.054	5.433*	0.820	-0.021	K01840
Bacteria	Succiniclasticum	5.054	5.433*	0.820	-0.021	K02005
Bacteria	Lactobacillus	0.417*	0.405	0.654	-0.002	K02429
Bacteria	Acidaminococcus	0.971	1.051**	1.033	0.046	K02454
Bacteria	Magnetospira	0.004	0.004*	1.127	0.054	K02454
Bacteria	Salinicoccus	0.003	0.004*	1.177	0.055	K02454
Bacteria	Scardovia	0.002	0.003	1.046	0.053	K02454
Bacteria	Sphaerochaeta	0.021	0.024**	1.11	0.037	K02454
Bacteria	Acetobacterium	0.006	0.006	1.094	0.032	K02454
Bacteria	Treponema	0.635	0.790**	1.077	0.061	K02652
Bacteria	Acidaminococcus	0.971	1.051**	1.033	0.046	K02653
Bacteria	Sphaerochaeta	0.0210	0.024**	1.110	0.037	K02653
Bacteria	Treponema	0.635	0.790**	1.077	0.061	K03205
Bacteria	Elusimicrobium	0.002	0.004*	1.148	0.067	K03205
Protozoa	Trichomonas	0.025	0.041	0.895	0.055	K03205
Bacteria	Bifidobacterium	0.942*	0.372	0.868	-0.003	K11068
Bacteria	Methyloversatilis	0.004	0.004	1.009	-0.06	K11068
Bacteria	Phenylobacterium	0.007	0.007	0.822	-0.051	K11068

VIP, Variable Importance for Projection. Coef., Coefficient associated with the VIP value obtained by PLS analysis. ^aPLS results between microbial genera and FCR or RFI. ^bGenes identified as highly correlated with the microbial genera by PLS and also identified in the genome of the corresponding MAG. Bold: Significant GLM results for microbial genera with year and breed as fixed effect; *P < 0.05; **P < 0.001.