Table 7.
Effect of dietary inclusion of an organic acids-based formulation (OABF) and avilamycin dietary inclusion on cecal mucosa-associated bacteria (log cells/g mucosa-associated cell pellet) of 42-day-old broilers.
| item | Total bacteria | Bacteroides spp. | Lactobacillus spp. | Clostridium leptum subgroup | Clostridium coccoides subgroup | |
|---|---|---|---|---|---|---|
| Main effect | ||||||
| OABF1 | No | 8.56 | 7.98 | 8.02 | 8.02 | 7.76 |
| Yes | 8.59 | 8.00 | 8.11 | 8.11 | 7.72 | |
| Avilamycin2 | No | 8.52 | 7.94 | 7.96 | 7.96 | 7.65 |
| Yes | 8.63 | 8.04 | 8.16 | 8.16 | 7.82 | |
| Treatments 3 | ||||||
| CON | 8.55 | 7.95 | 7.98 | 7.98 | 7.76 | |
| OA | 8.49 | 7.92 | 7.95 | 7.95 | 7.56 | |
| OAAV | 8.70 | 8.08 | 8.27 | 8.27 | 7.88 | |
| AV | 8.57 | 8.00 | 8.05 | 8.05 | 7.77 | |
| Statistics | ||||||
| SEM4 | 0.158 | 0.169 | 0.229 | 0.161 | 0.148 | |
| PO | 0.828 | 0.902 | 0.578 | 0.579 | 0.787 | |
| PA | 0.469 | 0.545 | 0.842 | 0.228 | 0.263 | |
| PO×A | 0.574 | 0.754 | 0.699 | 0.435 | 0.319 | |
1
No: no OABF addition; Yes: addition of 1 g OABF/kg diet.
2
No: no avilamycin addition; Yes: addition of 2.5 mg of avilamycin/kg diet.
3
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).
4
Pooled standard error of means.