Figure 2.

Antimicrobial use per coaching period for the participating broiler farms in Belgium (n = 15) and the Netherlands (n = 13). Antimicrobial use is expressed as the number of days an animal was treated with antimicrobials out of 100 days (treatment incidence (TI) per 100 days). The line within each box represents the median value. The lower and upper boundaries of each box correspond to the 25th and 75th percentiles, respectively. Whiskers below and above each box are the 10th and 90th percentiles. Points below and above the whiskers represent outliers.