Table 6.
Plasma diamine oxidase activity and D-lactic acid concentration of broilers fed diets supplementation with xylo-oligosaccharides (XOS),60Co γ-ray–irradiated Astragalus polysaccharides (IAPS), and their combination on day 21.
| Treatments1 | DAO (U/L) | D-LA (nmol/mL) |
|---|---|---|
| Control | 24.62 | 23.61a |
| AGP | 23.08 | 13.64b |
| XOS | 29.13 | 18.00a,b |
| IAPS | 25.60 | 18.80a,b |
| XOS + IAPS | 26.92 | 15.39b |
| SEM | 1.10 | 1.12 |
| P value | 0.49 | 0.04 |
| Main effects | 2.74 | 2.39 |
| XOS | ||
| − | 26.39 | 21.21x |
| + | 28.03 | 16.69y |
| IAPS | ||
| − | 26.88 | 20.81 |
| + | 27.55 | 17.09 |
| P values | ||
| XOS | 0.57 | 0.08 |
| IAPS | 0.81 | 0.15 |
| XOS × IAPS | 0.32 | 0.66 |
a,bSuperscripts for means belong to 1-way ANOVA among 5 treatment groups.
x,ySuperscripts for means belong to 2 × 2 factorial arrangement (XOS and IAPS), excluding the AGP group.
Means with no common superscripts within the column of each classification are significantly different (P ≤ 0.05).
Abbreviations: DAO, diamine oxidase; D-LA, D-lactic acid.
Control, basal diet; AGP, basal diet supplemented with 50 mg/kg chlortetracycline; XOS, basal diet supplemented with 100 mg/kg XOS; IAPS, basal diet supplemented with 600 mg/kg IAPS; XOS + IAPS, basal diet supplemented with 100 mg/kg XOS and 600 mg/kg IAPS.