. 2018 May 25;96(8):3446–3459. doi: 10.1093/jas/sky211

Table 5.

Effect of EN and MON on rumen fermentation parameters of BEEF (15:85 roughage: concentrate) trials¹

	0 EN		1.25 EN		2.5 EN			P value²
Item	0 MON	4 MON	0 MON	4 MON	0 MON	4 MON	SEM	EN	MON	EN × MON
Dilution rate (mL, d⁻¹)	1,523	1,559	1,511	1,498	1,557	1,552	35.5	NS	NS	NS
Gas production
Total gas (L)	3.25^a	3.06^ab	3.20^ab	2.93^bc	2.90^c	2.39^d	0.20	<0.01	<0.01	0.06
CH₄, mM/d	43.57^a	26.67^c	35.67^b	20.03^d	32.20^b	18.56^d	1.79	<0.01	<0.01	0.01
CO₂, mM/d	103.03	101.34	108.8	98.73	88.43	88.61	4.23	<0.01	NS	NS
N₂O (×10⁻⁴), mM/d	34	21	22	32	30	31	3.8	NS	NS	NS
Nutrient disappearance
DM	74.38^a	74.90^a	74.54^a	73.97^ab	72.61^bc	71.70^c	1.36	<0.01	NS	NS
NDF	32.48^a	29.34^b	29.88^a	25.84^b	28.87^ab	24.6^b	1.73	<0.01	<0.01	NS
CP	82.56	83.94	82.68	83.17	81.98	82.37	0.51	NS	0.08	NS
Starch	90.35^a	90.24^a	89.3^ab	89.4^ab	87.8^b	87.43^b	0.64	<0.01	NS	NS

^a–dWithin a row, means without a common superscript letter differ, P < 0.05.

¹EN = encapsulated calcium nitrate (0, 1.25, and 2.5% of diet DM); MON = sodium monensin (0 and 4 mg/L).

²NS indicates P > 0.1.