Table 8. The comparison of archaeal abundances from level phylum to level genus in goat rumen between RYR group and CT group (% of sequences)^a (n = 20).

	CT	RYR	SED	P
Phylum
Crenarchaeota	4.0	19.4	3.62	0.002
Euryarchaeota	95.8	78.7	4.11	0.002
Unclassified Archaea	0.2	1.9	0.6	0.025
Class
Thermoprotei	4.0	19.4	3.62	0.002
Methanobacteria	64.0	32.6	4.42	<0.001
Methanomicrobia	2.7	8.5	2.00	0.017
Order
Unclassified Thermoprotei	3.9	19.1	3.61	0.002
Methanobacteriales	64.0	32.6	4.42	<0.001
Methanomicrobiales	2.1	8.2	2.04	0.015
Family
Methanobacteriaceae	64.0	32.6	4.42	<0.001
Methanomicrobiaceae	2.1	8.1	2.02	0.015
Unclassified Thermoplasmatales	3.6	7.8	1.60	0.026
Genus
Methanobrevibacter	63.8	32.3	4.49	<0.001
Unclassified Methanobacteriaceae	0.2	0.0	0.04	0.007
Methanomicrobium	2.1	8.1	2.02	0.015

^aOnly the taxa that were significantly different (P < 0.05) between treatments were presented.