Fig 5. Abundance of “resistance to antibiotics and toxic compounds (RATC)” sequences in fecal samples collected from control (n = 3) and ceftiofur crystalline free acid treated (n = 3) cows on day 3 post-treatment.

Day 0 (pre-treatment) samples were used as a covariate. Values are expressed as a percentage of the total “virulence, disease, and defense” sequences. The symbol * indicates significant differences (P ≤ 0.10).