Figure 2.
Colonisation of the chicken intestinal tract by C. jejuni (A–C) and specific antibody levels in serum (D) at 14 and 28 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. Levels of specific IgY antibodies against C. jejuni in serum were determined at each time point. Birds were challenged with C. jejuni M1 at 3 weeks of age. At each time point there were 10–12 birds per group. Bars represent the median values; circles represent individual birds. **p value ≤ 0.01; ***p value ≤ 0.001; NS = non-significant.