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Table 3 Genus-level composition of the rumen samples from different groups of heifers (relative abundance ≥0.1%)

From: Effects of dietary energy levels on rumen bacterial community composition in Holstein heifers under the same forage to concentrate ratio condition

Phylum Genus Treatments SEM P
L M H Treatment Age Treatment × Age
Actinobacteria Bifidobacterium 0.55 0.35 0.17 0.0008 0.1776 0.0202 0.0603
Bacteroidetes CF231 0.65 0.74 0.64 0.0004 0.5347 0.0003 0.2984
Prevotella 4.63 5.96 4.41 0.0029 0.1140 < 0.0001 0.9769
Chloroflexi SHD-231 0.29a 0.23b 0.21b 0.0001 0.0249 0.0007 0.4629
Firmicutes Anaerostipes 0.17 0.21 0.18 0.0002 0.7527 0.5715 0.7874
Anaerovibrio 0.24 0.31 0.29 0.0002 0.4666 0.0845 0.6887
Blautia 0.17 0.33 0.29 0.0003 0.0994 < 0.0001 0.0309
Butyrivibrio 2.73 2.67 2.52 0.0010 0.6909 < 0.0001 0.0085
Carnobacterium 9.62 9.08 7.48 0.0193 0.8961 0.0258 0.9839
Clostridium 0.25 0.26 0.19 0.0002 0.2906 0.0230 0.5487
Coprococcus 0.32 0.23 0.17 0.0002 0.1160 < 0.0001 0.5423
Facklamia 0.19 0.12 0.06 0.0003 0.2606 0.0333 0.1067
L7A_E11 0.12 0.13 0.13 0.0001 0.7989 0.9725 0.4593
Mogibacterium 0.84 0.78 0.86 0.0005 0.8112 0.0004 0.8287
Oscillospira 0.39 0.39 0.35 0.0002 0.6750 0.0046 0.5703
p-75-a5 0.27 0.25 0.29 0.0002 0.6309 0.0010 0.5379
RFN20 0.11 0.10 0.11 0.0001 0.9604 < 0.0001 0.7839
Ruminococcus 4.36 3.73 4.04 0.0023 0.5613 < 0.0001 0.6957
Selenomonas 0.09 0.13 0.11 0.0001 0.1286 0.2349 0.4714
Shuttleworthia 0.15 0.16 0.15 0.0001 0.8867 < 0.0001 0.4508
Succiniclasticum 3.48b 3.89ab 4.49a 0.0009 0.0034 0.0090 0.6174
Trichococcus 0.20 0.13 0.12 0.0003 0.6035 0.0018 0.2963
Proteobacteria Acinetobacter 0.94 0.49 0.32 0.0017 0.3587 0.0032 0.3414
Desulfovibrio 0.17ab 0.20a 0.13b 0.0001 0.0468 < 0.0001 0.1780
Pseudomonas 0.22 0.12 0.13 0.0003 0.4600 0.2161 0.3478
Psychrobacter 0.27b 0.27b 0.43a 0.0001 < 0.0001 0.0131 < 0.0001
  1. a,bValues in the same row with different superscript letters differ significantly (P < 0.05)