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Table 2 Phylum-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

Treatments

SEM

P

L

M

H

Treatment

Age

Treatment × Age

Actinobacteria

1.97

1.63

1.33

0.0010

0.0690

0.0014

0.0989

Bacteroidetes

20.8

23.44

18.69

0.0114

0.2825

< 0.0001

0.9667

Chloroflexi

0.29

0.24

0.21

0.0003

0.1783

0.0004

0.1384

Firmicutes

54.69

54.79

51.62

0.0065

0.1295

< 0.0001

0.3535

Proteobacteria

13.41

10.76

15.57

0.0205

0.6438

0.0002

0.6974

Spirochaetes

0.10

0.10

0.08

0.0001

0.7489

0.0001

0.3636

Tenericutes

2.03

1.99

2.04

0.0017

0.9897

< 0.0001

0.1050

TM7

2.42

2.1

2.04

0.0016

0.6041

0.0191

0.3990