Fig. 2. Effects of dietary coated CuSO₄ and ZnO on beta diversity of fecal microbiota of weaned pigs (n = 3).

Principal coordinated analysis based on (A) unweighted and (B) weighted Unifrac distances. The ANOSIM test was used for statistically significant distances. CON, a basal weaner diet based on corn and soybean meal; T1, CON + 2,500 ppm standard ZnO; T2, CON + 100 mg/kg dietary coated CuSO₄ and 100 mg/kg dietary coated ZnO; T3, CON + 200 mg/kg dietary coated CuSO₄ and 200 mg/kg dietary coated ZnO.