Table 1.

Bacterial strains used in this study.

Strains	Description	Source or reference
χ3761	S. Typhimurium UK-1	(Hassan and Curtiss, 1990)
S100	S. Typhimurium, clinical isolate from duck	(Liu et al., 2016)
S246	S. Enteritidis, clinical isolate from chicken	(Liu et al., 2016)
S340	S. Choleraesuis, clinical isolate from pig	(Liu et al., 2016)
χ12253	ΔwaaC41	χ3761
χ12252	ΔwaaF40	χ3761
χ11308	ΔwaaG42	(Kong et al., 2011c)
χ9945	ΔrfaH49	(Kong et al., 2011c)
χ11309	ΔwaaI43	(Kong et al., 2011c)
χ11310	ΔwaaJ44	(Kong et al., 2011c)
χ11312	ΔwaaL46	(Kong et al., 2011c)
χ11311	ΔrfbP45	(Kong et al., 2011c)
χ9944	Δwzy-48	(Kong et al., 2011c)