. 2022 Jun 7;100(8):skac211. doi: 10.1093/jas/skac211

Table 6.

Effects of dietary treatments on enteric CH₄ emissions in Hanwoo growing steers

Item^‡	Treatment^†			SEM	P-value
Item^‡	HFC-LEC	HFC-HEC	LFC-HEC	SEM	P-value
CH₄ from respiration
ppm	24.5^a	20.6^ab	16.4^b	1.36	<0.001
ppm/kg of DMI	3.2^a	2.8^a	2.1^b	0.18	<0.001
ppm/kg of FDMI	9.2	8.7	8.8	1.06	0.868
ppm/kg of NDFI	7.1	7.6	6.3	0.55	0.122
ppm/kg of fNDFI	14.5	13.7	13.8	0.18	0.868
CH₄ from er.uctation
ppm	145.2^a	120.9^a	92.6^b	8.27	<0.001
ppm/kg of DMI	18.6^a	16.1^a	11.9^b	1.02	<0.001
ppm/kg of FDMI	53.8	50.7	49.4	5.74	0.698
ppm/kg of NDFI	41.6	44.3	35.5	2.84	0.058
ppm/kg of fNDFI	84.6	79.7	77.7	9.02	0.698

HFC-LEC, a high forage-to-concentrate ratio (0.35) with a low-energy concentrate mix; HFC-HEC: a high forage-to-concentrate ratio (0.35) with a high-energy concentrate mix; LFC-HEC, a low forage-to-concentrate ratio (0.25) with a high-energy concentrate mix.

DMI, dry matter intake; FDMI, forage dry matter intake; NDFI, neutral detergent fiber intake; fNDFI, forage neutral detergent fiber intake.

Means within the same row with different superscripts are significantly different (P < 0.05).