Table 1.

Richness and diversity indices estimation of intestinal microbiota (based on 13,800 sequences per sample).

Groups	Richness indices		Diversity indices
	Observed species	Chao1	PD whole tree	Shannon
ILEUM
Control (n = 4)	1713.50 ± 98.66	2905.81 ± 209.69	87.94 ± 3.27	7.26 ± 0.29
Antibiotics (n = 4)	1800.20 ± 140.37	3521.36 ± 258.69	100.65 ± 5.46	6.82 ± 0.44
zinc oxide (ZnO) (n = 4)	1733.30 ± 115.41	3277.46 ± 150.33	96.74 ± 6.51	6.83 ± 0.42
P.value (Antibiotics vs. Control)	0.42	0.02	0.01	0.19
P.value (ZnO vs. Control)	0.83	0.03	0.04	0.2
P.value (ZnO vs. Antibiotics)	0.55	0.21	0.46	0.96
COLON
Control (n = 4)	2703.35 ± 75.76	4809.94 ± 371.91	137.94 ± 3.96	8.91 ± 0.21
Antibiotics (n = 4)	2452.23 ± 102.21	4337.07 ± 252.35	130.25 ± 4.76	8.69 ± 0.12
ZnO (n = 3)	2496.43 ± 28.61	4586.71 ± 241.31	131.94 ± 0.77	8.54 ± 0.19
P.value (Antibiotics vs Control)	0.01	0.02	0.04	0.16
P.value (ZnO vs. Control)	0.01	0.04	0.01	0.08
P.value (ZnO vs. Antibiotics)	0.56	0.28	0.63	0.25

Significant p-values (< 0.05) are bolded.