Table 8.
Volatile fatty acid composition on d 4 and d 11 in pigs experimentally infected with ETEC and fed different diets after weaning.
| Item | Day after Weaning | Treatment * | SEM | p-Value | |||||
|---|---|---|---|---|---|---|---|---|---|
| 4 | 11 | Base | ZnO | OACP | D | T | D × T | ||
| Total VFA (mmol/L) | 50.4 | 55.1 | 49.7 a | 49.1 a | 61.1 b | 1.57 | 0.475 | 0.013 | 0.832 |
| Molar ratios | |||||||||
| Acetic acid (%) | 51.9 a | 54.5 b | 54.9 | 54.1 | 50.7 | 0.84 | 0.028 | 0.139 | 0.279 |
| Propionic acid (%) | 22.3 | 21.8 | 23.2 | 21.4 | 22.0 | 0.82 | 0.586 | 0.673 | 0.756 |
| Butyric acid (%) | 14.7 | 15.9 | 13.4 | 15.9 | 15.6 | 0.73 | 0.660 | 0.416 | 0.117 |
| Isobutyric acid (%) | 2.5 | 1.9 | 2.4 | 2.0 | 2.3 | 0.18 | 0.061 | 0.650 | 0.946 |
| Valeric acid (%) | 4.4 | 3.6 | 4.9 a | 2.9 b | 4.9 a | 0.24 | 0.064 | 0.003 | 0.578 |
| Isovaleric acid (%) | 3.9 a | 2.6 b | 3.6 | 3.0 | 3.5 | 0.33 | 0.024 | 0.683 | 0.929 |
| Caproic acid (%) | 1.2 a | 0.6 b | 1.0 | 0.7 | 1.1 | 0.10 | 0.017 | 0.344 | 0.943 |
* Base diet; ZnO: base + 3 g ZnO/kg; OACP: base + 1.5 g/kg of a mixture of an organic acid blend, cinnamaldehyde and a permeabilizing complex (Biotronic Top 3®, Biomin Australia Pty, Ltd., Carlingford, Australia); VFA, volatile fatty acids; SEM, standard error of the mean; D, day; T, treatment; a,b Means within a main effect within a row with different superscripts are significantly different (p < 0.05).