Figure 2.
Comparison of Campylobacter counts of a control group (black boxplots) and group A (green boxplots), receiving organic acids via drinking water and group P (turquoise boxplots), receiving a phage mixture (8.94 × 106 PFU/bird) via drinking water. Treatment of experimental groups: orange arrow = organic acid blend in group A, red arrow = phage mixture in group P. (a) Campylobacter counts in fecal and cecal samples until thinning. At day 31, samples were taken first and afterwards dosing was started. (b) Campylobacter counts of fecal and cecal samples after thinning until slaughter (n = 19). Boxplots indicate minimum, maximum, upper and lower quartile, and median values (n = 19). Significance levels (P values) determined by Kruskal–Wallis test are indicated with * (P < 0.05). dph = days post hatch.