Table 3. The Alpha diversity index of the samples

Sample/info	Sobs index	Chao index	Ace index	Shannon index	Simpson index	Coverage
C1	1,267.530±171.852	1,510.231±201.751	1,515.750±205.170	4.827±0.7345	0.041±0.043	0.993±0.002
C2	1,250.333±132.952	1,360.722±216.808	1,361.686±229.008	5.373±0.297	0.017±0.009	0.996±0.003
E	1,401.333±152.792	1,489.633±203.448	1,480.794±202.806	5.667±0.063	0.012±0.001	0.997±0.002
M1	1,002.667±51.259	1,018.735±50.420	1,011.785±52.527	5.779±0.092	0.008±0.001	0.999±0.000
E2	351.333±159.439	383.601±149.439	372.815±151.463	2.567±0.889	0.245±0.167	0.999±0.000
M2	978.566±18.328	998.733±33.006	986.595±21.047	5.772±0.0292	0.008±0.001	0.999±0.000
F	924.000±169.513	1,116.558±241.009	1,091.290±235.108	5.083±0.124	0.024±0.003	0.993±0.002
W	445.333±0.000	682.374±519.825	837.135±508.115	2.015±1.246	0.387±0.187	0.995±0.004

C1, pre-sterilized cow’s teats; C2, post-sterilized cow’s teats; E, milking cluster; M1, milk in storage tank; M2, transport vehicle; E2, storage equipment; F, cow dung samples; W, drinking water.