Figure 4: Shedding of C. jejuni in bursectomised and control birds.

Cloacal swabs from individual birds were taken weekly following challenge with C. jejuni M1 at 3 weeks of age (A). Shedding was categorised as heavy, moderate, low or negative (B and C). Data is presented as percentage of birds Campylobacter-positive per shedding category based on eight to ten birds per group at each time point.