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Alpha diversity of the microbiota in the different groups. There were no differences in the Chao index between the two groups at 2 and 4 weeks after birth, and it decreased from 2 to 4 weeks in both the FT and FI groups (A). There was no difference in the Shannon index between the FI and FT groups or within the FI or FT group at 2 and 4 weeks of life (B). *:P<0.05.
