Table 5.
Concentrations of SCFAs in different gastrointestinal sections of ducks (mg/g).
| Item | Proventriculus | Gizzard | Duodenum | Jejunum | Ileum | Cecum | Rectum |
|---|---|---|---|---|---|---|---|
| Acetate | 0.0176 ± 0.0042a | 0.0216 ± 0.0076a | 0.0281 ± 0.0071a | 0.0288 ± 0.0151a | 0.0767 ± 0.1060b | 0.9965 ± 0.6369c | 0.2216 ± 0.1764a |
| Propionate | — | — | — | — | 0.0158 ± 0.0166 | 0.5907 ± 0.3947 | 0.0183 ± 0.0153 |
| Butyrate | — | — | — | — | 0.0122 ± 0.0173 | 0.3323 ± 0.3164 | 0.0162 ± 0.0283 |
| Isobutyrate | — | — | — | — | — | 0.0234 ± 0.0124 | — |
| Valerate | — | — | — | — | — | 0.0237 ± 0.0191 | — |
| Isovalerate | — | — | — | — | — | 0.0149 ± 0.0080 | — |
Means in the same row with different superscript letters differ significantly (P < 0.05). “—“ Indicates that the SCFA is undetected in the GIT section.
Abbreviations: GIT, gastrointestinal tract; SCFA, short-chain fatty acid.