Metataxonomic and metabolomic profiling revealed Pinus koraiensis cone essential oil reduced methane emission through affecting ruminal microbial interactions and host-microbial metabolism

Table 2 Enteric methane emission for the dietary treatments

Item	Treatment		SEM	P value
Item	CON	PEO	SEM	P value
CH₄ from respiration
ppm-m	16.9	16.0	0.75	NS
ppm/BW^0.75	0.55	0.52	0.03	NS
ppm/kg of DMI	13.1	12.4	0.73	NS
ppm/kg of DDMI	24.4	22.6	0.90	< 0.1
CH₄ from eructation
ppm-m	61.2	53.6	3.15	< 0.05
ppm/BW^0.75	1.98	1.74	0.10	< 0.05
ppm/kg of DMI	47.6	41.9	2.82	< 0.1
ppm/kg of DDMI	88.3	76.3	4.80	< 0.05

NS: not significant; SEM: standard error of the mean; CON: without PEO; PEO: Pinus koraiensis essential oil; CH₄: methane; BW: body weight; DMI: dry matter intake; DDMI: digestible dry matter intake

ISSN: 2524-4671