Table 7.

Relative abundance proportions of nitrate-reducing bacterial genera in the rumen and cecum of bulls receiving a control (CTL) or linseed plus nitrate (LINNIT) supplemented diet.

Nitrate-reducing genera	CTL		LINNIT		SEM	Effect
	Rumen	Cecum	Rumen	Cecum		Treatment	DCa	Treatment × DC
Selenomonas	–	0.003	–	–	0.001	0.138	0.138	0.138
Selenomonas_1	0.033	0.002	0.039	0.005	0.003	0.083	<0.001	0.646
Selenomonas_4	0.003	–	0.006	–	0.001	0.539	<0.05	0.539
unclassified_Selenomonadales genus	–	0.007	0.003	0.010	0.002	0.251	<0.01	0.860
Butyrivibrio	0.002	0.028	–	0.021	0.002	0.111	<0.001	0.311
Butyrivibrio_2	0.129	0.011	0.136	0.015	0.004	0.214	<0.001	0.745
Clostridium_sensu_stricto_1	0.002	0.061	0.003	0.073	0.003	<0.05	<0.001	0.083
Veillonellaceae_UCG.001	0.033	–	0.038	–	0.003	0.185	<0.001	0.185
unclassified_Veillonellaceae genus	0.013	0.003	0.012	0.005	0.003	0.976	<0.001	0.593

Values are means of eight individual measures; data were analyzed using two-way ANOVA in R.