Table 9.
The effect of butyric acid and α -monolaurin, with and without the inclusion of antibiotic growth promoters, on VH:CD ratio of the duodenum, jejunum and ileum of broilers at 33 days of age (± standard error of the mean).
| Intestinal Segments | Treatment | Without AGP α | With AGP α | Mean |
|---|---|---|---|---|
| Duodenum | No additives | 8.79 b1 (±0.62) | 6.47 b2 (±0.62) | 7.63 b (±0.44) |
| Butyric acid # | 9.22 b (±0.62) | 7.93 b (±0.62) | 8.58 b (±0.44) | |
| Monolaurin * | 9.97 b (±0.62) | 10.21 a (±0.62) | 10.09 a (±0.44) | |
| Butyric acid # + Monolaurin * | 12.48 a1 (±0.62) | 9.15 a2 (±0.62) | 10.82 a (±0.44) | |
| Mean | 10.12 1 (±0.31) | 8.44 2 (±0.31) | ||
| Jejunum | No additives | 4.98 b (±0.43) | 5.11 b (±0.43) | 5.04 b (±0.30) |
| Butyric acid # | 6.16 ab (±0.43) | 6.29 ab (±0.43) | 6.22 a (±0.30) | |
| Monolaurin * | 5.87 b1 (±0.43) | 7.23 a2 (±0.43) | 6.55 a (±0.30) | |
| Butyric acid # + Monolaurin * | 7.18 a (±0.43) | 6.36 a (±0.43) | 6.77 a (±0.30) | |
| Mean | 6.05 (±0.21) | 6.25 (±0.21) | ||
| Ileum | No additives | 4.65 (±0.38) | 4.44 b (±0.38) | 4.54 b (±0.27) |
| Butyric acid # | 5.24 (±0.38) | 5.20 ab (±0.38) | 5.22 ab (±0.27) | |
| Monolaurin * | 4.87 (±0.38) | 5.78 a (±0.38) | 5.33 a (±0.27) | |
| Butyric acid # + Monolaurin * | 5.35 (±0.38) | 5.10 ab (±0.38) | 5.23 ab (±0.27) | |
| Mean | 5.03 (±0.19) | 5.13 (±0.19) |
α Antibiotic growth promoter: zinc bacitracin 15% (0.5 g/kg); # Novyrate®C (starter 1 g/kg, grower 0.75 g/kg, finisher 0.25 g/kg); * FRA® C12 Dry (1 g/kg); a,b column means per intestinal segment with a distinctive superscript differ significantly (p < 0.05); 1,2 row means with a distinctive superscript differ significantly (p < 0.05).