Betaine Modulates Rumen Archaeal Community and Functioning during Heat and Osmotic Stress Conditions In Vitro

Table 7

Pearson’s correlation coefficient analysis for archaea genera in liquid phase compared to fermentation parameters and gas production in vitro.

	Methanimicrococcus	Methanobacterium	Methanobrevibacter	Methanosaeta	Methanosarcina	Methanosphaera	Vadin CA11
Total fermentation gas	0.22	-0.08	0.18	0.11	-0.03	-0.24	-0.14
CH4	0.11	-0.06	0.18	0.13	-0.04	-0.24	-0.12
CO2	0.23	0.00	0.04	-0.04	0.06	-0.17	-0.07
CH4/g OM	-0.02	-0.03	0.32	0.14	-0.03	-0.27	-0.08
CH4/g DM	-0.02	-0.03	0.32	0.14	-0.03	-0.26	-0.09
MCR (%GE intake)	0.11	-0.06	0.18	0.13	-0.04	-0.24	-0.12
[2H] produced acetate	-0.08	0.01	-0.11	0.31	0.09	0.18	-0.16
[2H] produced butyrate	0.00	-0.13	0.16	-0.02	-0.11	-0.12	0.12
[2H] produced caproate	0.26	-0.04	-0.14	0.08	0.10	-0.18	0.10
[2H] produced (pathway 1)^1	-0.08	-0.04	-0.04	0.32	0.05	0.14	-0.12
[2H] produced (pathway 2)^2	-0.02	-0.05	-0.07	0.33	0.07	0.10	-0.09
[2H] utilized propionate	-0.30	-0.06	0.06	0.02	0.10	0.15	0.08
[2H] utilized valerate	0.21	0.09	-0.23	0.21	0.12	-0.06	0.12
[2H] utilized caproate	0.26	-0.04	-0.14	0.08	0.10	-0.18	0.10
[2H] utilized CH4	0.11	-0.05	0.18	0.12	-0.03	-0.23	-0.12
[2H] utilized (pathway 1)	0.10	-0.10	0.05	0.21	0.13	-0.23	0.05
[2H] utilized (pathway 2)	-0.09	-0.08	0.17	0.16	0.06	-0.11	-0.02
[2H] gain (pathway 1)	0.10	-0.11	0.06	0.21	0.14	-0.23	0.06
[2H] gain (pathway 2)	0.03	-0.006	-0.18	0.27	0.04	0.18	-0.09
[2H] recovery (pathway 1)	0.17	-0.07	0.05	-0.04	0.09	-0.33	0.15
[2H] recovery (pathway 2)	-0.08	-0.03	0.02	-0.06	0.002	-0.17	0.05

Bold cells show a significant correlation (). ¹Propanyl CoA as intermediate in caproate formation. ²Acetyl CoA as intermediate in caproate formation.