In vitro evaluation of nano zinc oxide (nZnO) on mitigation of gaseous emissions

Table 4 Effect of nZnO levels on cumulative gas volume and gas concentrations (n = 4 observations/treatment)

Effects	Alfalfa	Maize silage	Control	100 μg g^− 1	200 μg g^− 1	500 μg g^− 1	1000 μg g^− 1	SEM^a	P value
Effects	Alfalfa	Maize silage	Control	100 μg g^− 1	200 μg g^− 1	500 μg g^− 1	1000 μg g^− 1	SEM^a	Feed	nZnO	NZnO ^aFeed
Total Gas (mL)	41.09x	72.77y	58.17a	55.88a	55.88a	57.99a	58.17a	5.71	<.0001	0.875	0.542
CH₄ (%)	10.69x	9.47y	12.68a	11.52ab	10.18bc	9.26c	6.74d	1.44	0.0114	<.0001	0.479
CO₂ (%)	48.78x	45.55y	56.21a	53.46ab	50.06b	43.93c	32.16d	4.51	0.0314	<.0001	0.948
H₂S (ppm)	3420x	1314y	3150a	2856a	2431b	1936c	1460d	298	<.0001	<.0001	<.0001

^aData are presented as least square means per treatment ± SEM
Means followed by the letters (x/y/a/b/c/d) in each row are not significantly different at P ≤ 0.05

ISSN: 2055-0391