Table 8.
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 20 days of age (± standard error of the mean).
| Intestinal Segments | Treatment | Without AGP α | With AGP α | Mean |
|---|---|---|---|---|
| Duodenum | No additives | 6.98 b (±0.35) | 7.21 (±0.35) | 7.10 b (±0.25) |
| Butyric acid # | 8.37 a (±0.35) | 7.41(±0.35) | 7.89 a (±0.25) | |
| Monolaurin * | 8.72 a1 (±0.35) | 7.17 2 (±0.35) | 7.94 a (±0.25) | |
| Butyric acid # + Monolaurin * | 8.77 a1 (±0.35) | 7.32 2 (±0.35) | 8.04 a (±0.25) | |
| Mean | 8.21 1 (±0.17) | 7.28 2 (±0.17) | ||
| Jejunum | No additives | 4.98 b (±0.30) | 4.95 ab (±0.30) | 4.96 b (±0.21) |
| Butyric acid # | 6.17 a1 (±0.30) | 4.62 b2 (±0.30) | 5.39 ab (±0.21) | |
| Monolaurin * | 5.89 a1 (±0.30) | 4.68 b2 (±0.30) | 5.29 b (±0.21) | |
| Butyric acid # + Monolaurin * | 6.37 a (±0.30) | 5.56 a (±0.30) | 5.97 a (±0.21) | |
| Mean | 5.85 1 (±0.15) | 4.95 2 (±0.15) | ||
| Ileum | No additives | 2.80 b (±0.20) | 3.21 (±0.20) | 3.01 b (±0.14) |
| Butyric acid # | 3.62 a (±0.20) | 3.50 (±0.20) | 3.56 a (±0.14) | |
| Monolaurin * | 4.04 a1 (±0.20) | 3.27 2 (±0.20) | 3.66 a (±0.14) | |
| Butyric acid # + Monolaurin * | 3.91 a (±0.20) | 3.73 (±0.20) | 3.82 a (±0.14) | |
| Mean | 3.59 (±0.10) | 3.43 (±0.10) |
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).