Table 2.
The effect of low amount of antibiotics on operational taxonomic units (OTUs) and alpha diversity for ileum, colon and rectum.
| Ileum | CON | LCA | LSA | P Value |
|---|---|---|---|---|
| OTUs | 248.5 ± 17.3 | 259.3 ± 59.0 | 241.3 ± 46.2 | 0.87 |
| Chao1 | 255.4 ± 17.6 | 272.0 ± 53.6 | 260.7 ± 33.4 | 0.84 |
| Observed species | 199.8 ± 26.3 | 220.9 ± 49.0 | 196.8 ± 39.8 | 0.71 |
| Shannon | 4.84 ± 0.21 | 5.07 ± 0.55 | 4.13 ± 1.00 | 0.27 |
| Colon | ||||
| OTUs | 186.5 ± 22.8 | 196.5 ± 16.2 | 180.3 ± 23.4 | 0.61 |
| Chao1 | 206.4 ± 20.4 | 214.0 ± 15.0 | 196.7 ± 20.6 | 0.49 |
| Observed species | 181.2 ± 23.1 | 188.5 ± 13.8 | 173.8 ± 25.9 | 0.70 |
| Shannon | 4.49 ± 0.6 | 4.39 ± 0.5 | 4.68 ± 0.6 | 0.81 |
| Rectum | ||||
| OTUs | 218.5 ± 14.2 a | 184.0 ± 8.2 b | 141.8 ± 12 c | 0.0003 |
| Chao1 | 223.7 ± 17.6 a | 208.7 ± 10.5 a | 157.8 ± 8.7 b | 0.0021 |
| Observed species | 196.6 ± 20.4 a | 177.2 ± 8.8 a | 136.2 ± 14.3 b | 0.0068 |
| Shannon | 5.2 ± 0.5 | 4.6 ± 0.5 | 4.3 ± 0.6 | 0.07 |
Note: the values are the mean plus standard deviation; CON = control, LCA = low cocktail of antibiotics concentration; LSA = low concentration of single antibiotic. Means with different superscript are significantly different (P < 0.05).