Table 7 Effects of dietary tannin and herbal mixture supplementation on alpha diversity indices and relative abundances (%) of rumen archaea in goats

Alpha diversity

Sequences reads:

8606

8127

18,253

11,880

2411

0.14

Observed ASVs

19.2

27

27.6

25

2.71

0.40

Chao1

19.2

26.8

27.6

24.53

2.71

0.40

Shannon

2.29

2.15

2.58

2.34

0.13

0.44

Invsimpsone

7.19

6.54

9.47

7.73

0.96

0.46

The relative abundances of archaeal genera (%)

P:Euryarchaeota; F: Methanobacteriaceae

Methanobrevibacter

99.00^b

98.80^b

96.69^a

98.16

0.36

0.006

Methanosphaera

0

0

0.87

0

0

0

P: Thermoplasmatota; F: Methanomethylophilaceae

Unclass_Methanomethylophilaceae

0.81

0.89

1.88

1.20

0.21

0.05

G: Candidatus Methanomethylophilus

0.17^a

0.16^a

0.45^b

0.26

0.04

0.01

P: Halobacterota

F: Halococcaceae; G: Halococcus

0

0

0.08

0

0

0

F: Haloferacaceae; G: Natronococcus

0

0

0.06

0

0

0