Table 10.
Effect of dietary inclusion of an organic acids-based formulation (OABF) and avilamycin dietary inclusion on the volatile fatty acid (VFA) concentration and molar ratios in the ileal digesta of 42-day-old broilers.
| Item | Total VFA1, mmol/kg of wet ileal digesta | Acetic, % | Propionic, % | Butyric, % | Other VFA2, % | Branched VFA3, % | |
|---|---|---|---|---|---|---|---|
| Main effect | |||||||
| OABF4 | No | 8.17 | 69.88 | 3.91 | 15.23 | 6.38 | 4.62 |
| Yes | 9.05 | 73.65 | 3.62 | 12.46 | 5.59 | 4.68 | |
| Avilamycin5 | No | 8.63 | 75.63 | 3.49 | 11.17 | 5.74 | 3.98 |
| Yes | 8.59 | 67.91 | 4.04 | 16.52 | 6.23 | 5.32 | |
| Treatments6 | |||||||
| CON | 7.79 | 73.61 | 3.60 | 12.34 | 6.51 | 3.94 | |
| OA | 9.48 | 77.64 | 3.38 | 10.00 | 4.96 | 4.03 | |
| OAAV | 8.63 | 69.66 | 3.86 | 14.93 | 6.23 | 5.34 | |
| AV | 8.55 | 66.15 | 4.21 | 18.11 | 6.24 | 5.30 | |
| Statistics | |||||||
| SEM7 | 0.800 | 3.160 | 0.511 | 1.940 | 0.714 | 0.731 | |
| PO | 0.280 | 0.243 | 0.578 | 0.166 | 0.283 | 0.932 | |
| PA | 0.957 | 0.021 | 0.291 | 0.010 | 0.495 | 0.078 | |
| PO×A | 0.322 | 0.936 | 0.904 | 0.828 | 0.291 | 0.973 | |
1
Total VFA = acetic + propionic + butyric + branched VFA + other VFA.
2
Οther VFA = valeric + caproic + heptanoic.
3
Βranched VFA = isobutyric + isovaleric + isocaproic.
4
No: no OABF addition; Yes: addition of 1 g OABF/kg diet.
5
No: no avilamycin addition; Yes: addition of 2.5 mg of avilamycin/kg diet.
6
Interaction means from 8 replicate pens per treatment. Treatments include: control – no additions (CON), 1 g OABF/kg diet (OA), avilamycin 2.5 mg active components/kg diet (AV) and combination of OA + AV (OAAV).
7
Pooled standard error of means.