FIG. 5.
Monitoring of chicken intestine colonization by E. coli strain BEN2908 (filled squares) and its mutant derivative BEN2908ΔfosT (open circles). Axenic chickens (A), SPF chickens (B), or SPF chickens receiving a dietary supplement of 0.5% scFOS in drinking water (C) were fed with strains BEN2908 and BEN2908ΔfosT together (each at 5 × 106 CFU/chicken). The presence of each strain in the feces was monitored over time. Bars represent standard errors of the log10 (mean number of CFU/g of feces) for each set of eight chickens.