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Effect of different rearing environment and source of nutrients during lactation on alpha diversity of fecal samples collected from 21, 62, and 78 day old pigs. Microbial alpha diversity was calculated with observed operational taxonomic units (OTUs) (A) and Shannon index (B). Significant differences between groups were determined by nonparametric Wilcoxon Rank Sum test. SR, sows reared; IR, isolated reared. ∗∗Indicates significant difference between treatments (P < 0.01).
