Reduction of enteric methane emission using methanotroph-based probiotics in Hanwoo steers

Table 6 Effects of methanotrophic bacteria supplementation on the greenhouse gas emission

Item	Treatments¹			SEM²	p value
Item	CON	LOW	HIGH	SEM²	p value
DMI (kg/d)³	9.97 ± 0.40	9.98 ± 0.33	10.19 ± 0.52	0.121	0.3606
CH₄ (g/d)	215.13 ± 29.75^a	189.23 ± 23.49^b	184.19 ± 21.44^b	7.186	0.0106*
CH₄/DMI (g/kg DMI)	21.59 ± 2.88^a	18.93 ± 2.07^b	18.06 ± 1.81^b	0.651	0.0019*
CH₄/BW^0.75 (g/kg)	2.11 ± 0.24^a	1.85 ± 0.13^b	1.81 ± 0.04^b	0.05	0.0006*
CO₂ (g/d)	9,437 ± 1,523	9,263 ± 1,772	9,056 ± 1,162	429	0.8250

Data are expressed as mean ± standard deviation (SD). ^{a, b}Means (n = 12) within a row with different superscripts differ (p < 0.05). ¹Treatments: CON, basal diet (0.2% wheat bran); LOW, basal diet with 0.2% NC52PC (3 × 10⁷ CFUs/ml); HIGH, basal diet with 0.2% NC52PC (3 × 10⁸ CFUs/ml). ²SEM, standard error of the mean. ³DMI, dry matter intake

ISSN: 2524-4671