Table 6. Effects of stocking density (SD) and dietary supplementation of vitamin C (Vit C) on intestinal permeability in the jejunal mucosa of broiler chickens
| Treatment | Intestinal permeability |
| SD (birds/m2) | Vit C (mg/kg) | TER (Ω/cm2) | PD (mV) | ISC (μa/cm2) |
| 9 | 0 | 336 | 300 | 0.90 |
| 200 | 297 | 173 | 5.69 |
| 18 | 0 | 218 | 125 | 1.73 |
| 200 | 244 | 258 | 2.24 |
| SEM (n = 6) | | 36.3 | 99.4 | 2.758 |
| Main effect |
| SD (birds/m2) |
| 9 | | 316 | 236 | 3.30 |
| 18 | | 231 | 192 | 1.99 |
| SEM (n = 12) | | 25.6 | 70.3 | 1.950 |
| Vit C (mg/kg) |
| 0 | | 277 | 213 | 1.32 |
| 200 | | 271 | 215 | 3.97 |
| SEM (n = 12) | | 25.6 | 70.3 | 1.950 |
| Effect (p-value) | df | | | |
| SD | 1 | 0.03 | 0.66 | 0.64 |
| Vit C | 1 | 0.86 | 0.98 | 0.35 |
| SD × Vit C | 1 | 0.38 | 0.21 | 0.45 |
TER, trans-epithelial electrical resistance; PD, trans-epithelial voltage; ISC, short circuit current.