Table 2
Dietary effects on rumen pH, concentrations of rumen ammonia and volatile fatty acid in sheep^a

Item	Dietb		SEMc	P-value
	Control	FDGL		Diet	Time	Diet ​× Time
Rumen pH	6.61	6.67	0.100	0.574	<0.001	0.956
Total VFA (mmol/L)	62.29	63.86	3.543	0.676	<0.001	0.674
Acetic acid (mmol/L)	42.08	43.57	2.195	0.527	<0.001	0.639
Propionic acid (mmol/L)	10.76	11.25	0.772	0.551	<0.001	0.680
iso-Butyric acid (mmol/L)	0.69	0.66	0.091	0.799	0.021	0.485
Butyric acid (mmol/L)	7.39	7.16	0.610	0.713	<0.001	0.349
iso-Valeric acid (mmol/L)	0.87	0.73	0.081	0.231	<0.001	0.289
Valeric acid (mmol/L)	0.49	0.48	0.048	0.857	<0.001	0.548
Acetic/propionic acid ratio	4.02	3.97	0.134	0.706	<0.001	0.335
Rumen ammonia (mmol/L)	15.39	17.78	0.966	0.056	<0.001	0.061