Figure 2.

Campylobacter carriage in the chicken cloaca and caecum after the use of malic acid for five days. The partridge chickens (A) and AA broilers (B) at slaughter age were provided with malic acid-supplemented drinking water and the cloacal swab samples were collected before the experiment and 5 days after to determine the Campylobacter carriage. The caeca of the AA broilers were collected during slaughter to determine the load of colonized Campylobacter (C). Twenty chickens were assayed in each group, the data are presented as the mean ± SD, and asterisks indicate significant differences (p < 0.05 *).