Fig. 4

a Rank abundance curves and Venn diagram based on the average reads of bacteria community in the rumen of lambs (n = 10 per group). b Rank abundance curves and Venn diagram based on the average reads of the ciliate protozoa community in the rumen of lambs (n = 10 per group). c Pie charts showing the number and relative abundance of missing and emerging OTUs based on the OTU level of bacteria. The different colours of the parts represent the different taxonomic distribution of the OTUs at the phylum level. d Pie charts showing the number and relative abundance of missing and emerging OTUs based on the OTU level of the ciliate protozoa. The different colours of the parts represent the different taxonomic distribution of the OTUs at the family or genus level