Table 4.
Changes of intestinal histopathological in Escherichia coli–challenged Ma chickens treated with heat stress.
| Small intestine | Index | Control group | E. coli group | HS + E. coli group |
|---|---|---|---|---|
| Duodenum | Villus height (VH) | 118.28 ± 7.00 | 126.85 ± 7.13 | 109.05 ± 4.93∗ |
| Crypt depth (CD) | 13.60 ± 1.44 | 12.93 ± 0.61 | 13.73 ± 0.47 | |
| V/C | 8.82 ± 1.27 | 9.83 ± 0.53 | 7.95 ± 0.34∗∗ | |
| Jejunum | Villus height (VH) | 97.34 ± 3.64 | 79.13 ± 3.15## | 81.53 ± 0.96 |
| Crypt depth (CD) | 12.73 ± 0.66 | 21.06 ± 2.42## | 10.78 ± 0.71∗∗ | |
| V/C | 7.68 ± 0.60 | 3.796 ± 0.31## | 7.596 ± 0.45∗∗ | |
| Ileum | Villus height (VH) | 80.78 ± 4.92 | 48.60 ± 5.43## | 62.40 ± 1.10∗∗ |
| Crypt depth (CD) | 14.00 ± 0.55 | 15.53 ± 0.98# | 11.33 ± 1.09∗∗ | |
| V/C | 5.78 ± 0.45 | 3.15 ± 0.45## | 5.57 ± 0.61∗∗ |
#P < 0.05, ##P < 0.01 vs. control group; ∗P < 0.05, ∗∗P < 0.05 vs. E. coli group.
Abbreviations: HS, heat stress.