| Parte of intestine | Segment | Doses | Animal 1 Content of residual tannins (mg/ml) | Animal 2 Content of residual tannins (mg/ml) | Animal 3 Content of residual tannins (mg/ml) | Media ± D.S. Content of residual tannins (mg/ml) |
| DUODENUM | 6 | 250 | 0.309 | 0.287 | 0.283 | 0.293 ± 0.014 |
| YEYUNE | 12 | 250 | 0.290 | 0.291 | 0.283 | 0.288 ± 0.004 |
| 18 | 250 | 0.289 | 0.311 | 0.281 | 0.294 ± 0.015 | |
| 24 | 250 | 0.3093 | 0.291 | 0.283 | 0.294 ± 0.013 | |
| 30 | 500 | 0.286 | 0.292 | 0.273 | 0.284 ± 0.01 | |
| 36 | 500 | 0.281 | 0.288 | 0.277 | 0.282 ± 0.005 | |
| 42 | 500 | 0.294 | 0.286 | 0.277 | 0.286 ± 0.008 | |
| 48 | 500 | 0.293 | 0.286 | 0.277 | 0.285 ± 0.008 | |
| ILLEUM | 54 | 250 | 0.283 | 0.293 | 0.288 | 0.288 ± 0.005 |
| 60 | 250 | 0.289 | 0.288 | 0.286 | 0.288 ± 0.001 | |
| 66 | 250 | 0.294 | - | - | 0.294 |