Table 2
Effect of nZnO levels on ruminal pH and redox (after 72 h of incubation)

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
pH	7.22x	6.94y	7.09a	7.07a	7.08a	7.07a	7.08a	0.001	<.0001	0.644	0.401
Redox	-300x	-301x	-301a	-301a	-300a	-302a	-299a	9.004	0.748	0.947	0.217