. 2018 Feb 19;96(4):1362–1374. doi: 10.1093/jas/sky030

Table 7.

Nitrogen metabolism of annual ryegrass, canola, rapeseed, and turnip fed with orchardgrass during continuous culture fermentation

Item	Diet*				SEM
Item	ARG	CAN	RAP	TUR	SEM
N intake, g/d^†	4.33^b	4.83^a	4.27^c	4.83^a	0.004
NH₃-N, mg/dL	28.4^a	21.1^b	22.2^b	20.1^b	0.91
True CP digestibility, %	94.3^a	91.0^a	69.6^b	70.4^b	2.84
N flows, g/d
Total N	2.95^a	2.67^b	2.70^ab	2.70^ab	0.100
NH₃-N	1.14^a	0.85^b	0.90^b	0.80^b	0.038
NAN	1.80	1.83	1.80	1.90	0.092
Bacterial N	1.60^a	1.46^a	0.73^b	0.89^b	0.159
Dietary N	0.20^a	0.37^a	1.07^b	1.21^b	0.115
Bacterial efficiency
g N/kg DM truly digested	29.9^a	27.5^a	16.6^b	15.4^b	2.63
g N/kg OM truly digested	27.5^a	24.7^a	14.4^b	13.2^b	2.40

*ARG = 50% orchardgrass + 50% annual ryegrass; CAN = 50% orchardgrass + 50% canola; RAP = 50% orchardgrass + 50% rapeseed; TUR = 50% orchardgrass + 50% turnip.

^†N intake (g/d) = dietary N (g/d) + urea-N from buffer (g/d).

^a,bWithin a row, means without a common superscript differ (P ≤ 0.05).