Table 5.

Effect of dietary concentrate level on manure methane and nitrous oxide emissions.

Parameter	Diets1
	C20	C40	C60
Total gas, mL/kg DM	4.19 ± 0.301	3.67 ± 0.275	4.16 ± 0.347
CH4, g/kg DM	0.61 ± 0.035	0.42 ± 0.051	0.53 ± 0.033
N2O, mg/kg DM	0.21 ± 0.005a	0.23 ± 0.014a	0.34 ± 0.021b
N2O, mg/kg nitrogen	3.62 ± 0.303	3.38 ± 0.932	2.61 ± 0.154

^{a, b} Within a row, means without a common superscript differ (P < 0.05); number of animals sampled in each group (n = 5).

¹C20, 20:60:20 maize:wheat straw:concentrate; C40, 20:40:40 maize:wheat straw:concentrate; C60, 10:30:60 maize:wheat straw:concentrate.