Fig. 3.

Distribution of OTUs in the two treatment groups in farm 1. The heat map for farm 1 was created using OTUs with an OTU definition at a similarity cutoff of 95%. Each column represents groups and each row indicates OTUs. OTUs were sorted with the most abundant OTUs displayed at the top and the least abundant OTUs at the bottom. T and NT indicate tylosin and no-tylosin group, respectively, and numbers indicates weeks of age. Abundant OTUs were red color-coded and white blanks indicate missing OTUs.