Figure 5. Colonisation of the intestinal tract 63 days post infection.

Colonisation was examined in the ceca, jejunum and ileum and is presented as the CFU of C. jejuni per gram of gastrointestinal content. Birds were challenged with C. jejuni M1 at 3 weeks of age. There were 8 birds in the bursectomised group and 9 birds in the control group at the end of the experiment. Bars represent the median values; circles represent individual birds. **p ≤ 0.01; ***p ≤ 0.001.