Of the four major phyla, Actinobacteria
and Bacteroidetes were the most predominant microbiota at day 0
(28.17% and 33.75% of total sequences, respectively), but they were
substantially decreased after that time. Firmicutes increased greatly
at day 14 and day 21 (45.77% and 77.04% of total sequences, respectively).
The abundance of Proteobacteria increased from 8.57% at
day 0 to 52.32% at day 7, but it then decreased to 7.69% at day 21