Table 2. Effects of chitosan oligosaccharides on intestinal mucosal morphology of Sprague Dawley rats under heat stress.
| Item1 | CON | HS | HSC | SEM | P-value | |
|---|---|---|---|---|---|---|
| Duodenum | ||||||
| Villus height (μm) | 276.04a | 234.90b | 255.38ab | 10.84 | 0.0664 | |
| Crypt depth (μm) | 103.82 | 90.67 | 96.41 | 8.55 | 0.5699 | |
| Villus height:crypt depth | 2.79 | 2.68 | 2.68 | 0.27 | 0.9457 | |
| Jejunum | ||||||
| Villus height (μm) | 214.73a | 152.59b | 195.96a | 12.85 | 0.0181 | |
| Crypt depth (μm) | 81.68 | 71.13 | 65.19 | 9.34 | 0.4761 | |
| Villus height:crypt depth | 2.72 | 2.38 | 3.13 | 0.34 | 0.3329 | |
| Ileum | ||||||
| Villus height (μm) | 176.83a | 111.56b | 152.19a | 8.15 | 0.0007 | |
| Crypt depth (μm) | 59.35 | 47.85 | 62.47 | 5.91 | 0.2324 | |
| Villus height:crypt depth | 3.09a | 2.44b | 2.44b | 0.17 | 0.0306 | |
1CON group, basal diet; HS group, basal diet and heat stress; HSC group, basal diet with 200 mg/kg COS and heat stress. a, bDifferent superscripts within the same row present significance (P<0.05).