Table 4. Alpha diversity index of rumen bacteria.

Item	LY	HY	SEM	P-value
Sobs	1196.13	1214.88	17.21	0.60
Shannon	5.41	5.49	0.04	0.42
Simpson	0.01	0.01	0.00	0.74
ACE	1375.65	1360.65	18.75	0.70
Chao	1378.64	1376.82	20.10	0.97
Coverage	0.992	0.994**	0.00	0.001

*P<0. 05

**P<0. 01:

Values within a sampling day followed by superscript asterisks differ. SEM = standard error of the mean