Table 5.
The effect of butyric acid and α-monolaurin, with and without the inclusion of antibiotic growth promoters, on the villi height (µm) 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 | 2989.78 b1 (±86.23) | 2595.58 b2 (±86.23) | 2792.68 b (±60.97) |
| Butyric acid # | 3187.82 b1 (±86.23) | 2906.90 a2 (±86.23) | 3047.36 a (±60.97) | |
| Monolaurin * | 3462.50 a1 (±86.23) | 3086.72 a2 (±86.23) | 3274.61 c (±60.97) | |
| Butyric acid # + Monolaurin * | 3486.65 a1 (±86.23) | 3074.47 a2 (±86.23) | 3280.56 c (±60.97) | |
| Mean | 3281.69 1 (±43.11) | 2915.92 2 (±43.11) | ||
| Jejunum | No additives | 1591.21 b (±83.88) | 1806.88 (±83.88) | 1699.05 b (±59.32) |
| Butyric acid # | 1822.23 ab (±83.88) | 1799.30 (±83.88) | 1810.76 ab (±59.32) | |
| Monolaurin * | 1983.43 a1 (±83.88) | 1700.20 2 (±83.88) | 1841.81 ab (±59.32) | |
| Butyric acid # + Monolaurin * | 1966.81 a (±83.88) | 1812.18 (±83.88) | 1889.50 a (±59.32) | |
| Mean | 1840.92 (±41.94) | 1779.64 (±41.94) | ||
| Ileum | No additives | 1375.34 1 (±63.72) | 1157.70 b2 (±63.72) | 1266.52 (±45.06) |
| Butyric acid # | 1367.42 (±63.72) | 1330.12 ab (±63.72) | 1348.77 (±45.06) | |
| Monolaurin * | 1320.83 (±63.72) | 1260.44 ab (±63.72) | 1290.63 (±45.06) | |
| Butyric acid # + Monolaurin * | 1197.11 1 (±63.72) | 1380.94 a2 (±63.72) | 1289.03 (±45.06) | |
| Mean | 1315.17 (±31.86) | 1282.30 (±31.86) |
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–c 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).