Fig. 2
From: Impact of zinc oxide, benzoic acid and probiotics on the performance and cecal microbiota of piglets

Alpha diversity indices. Number of observed OTUs (A), Chao index (B) and Simpson’s index (C) observed in the cecum of piglets post-weaning supplemented with Zinc Oxide (ZnO), Benzoic acid plus probiotic (BA + P), ZnO + BA + P, and no supplementation (Control). *P ≤ 0.05