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Abundance of the genera Slackia (A) Peptococcus (B) and Catenibacterium (C) observed in the feces of piglets in the No Antibiotic and Antibiotic groups. P-values indicate the contrast between piglets in the two groups on each (day 35: end of phase 1; day 49: end of phase 2; day 63: end of phase 3).
