Table 2.

Effect of dietary forage to concentrate ratios on rumen fermentation parameters.

Items	Treatmentsa			SEMb	p-values
	C50	C65	C80		Treatment	Linear	Quadratic
pH	6.49	6.37	5.94	0.077	0.001	0.001	0.411
NH3-N,mg/dL	12.74	12.58	13.24	0.154	0.19	0.192	0.283
MCP	2.50	2.79	2.34	0.114	0.276	0.592	0.161
TVFA, mM	76.31	80.25	90.45	2.044	0.004	0.001	0.654
VFAs, molar of TVFA
Acetate	43.62	42.78	49.55	1.068	0.004	0.018	0.054
Propionate	15.46	17.88	19.52	0.761	0.076	0.022	0.495
Butyrate	12.49	14.13	15.31	0.479	0.038	0.01	0.455
Valerate	1.32	1.52	1.67	0.078	0.174	0.057	0.174
Isobutyrate	0.65	0.83	1.06	0.057	0.002	<0.001	0.002
Isovalerate	2.78	3.15	3.34	0.123	0.141	0.055	0.383
Acetate: Propionate	2.95	2.39	2.55	0.114	0.157	0.157	0.086

^aC50, diet contained 50% of concentrate; C65, diet contained 65% of concentrate; C80, diet contained 80% of concentrate.

^bSEM, standard error of the mean.