Table 2.
The effect of dietary supplementation with quercetin on selected trace- and macro-elements concentrations in laying hens’ egg yolk (n = 7).
| Treatment | ||||||
|---|---|---|---|---|---|---|
| Elements (ppb) | C | Q2 | Q4 | Q8 | SEM | p-value |
| As | 3.73 | 3.61 | 3.69 | 3.71 | 0.110 | 0.887 |
| Ca | 1.03 × 106 | 1.11 × 106 | 1.13 × 106 | 1.11 × 106 | 3.73 × 104 | 0.291 |
| Cd | 3.93 | 5.47 | 4.61 | 4.31 | 0.437 | 0.108 |
| Co | 3.30 | 3.44 | 3.73 | 3.41 | 0.134 | 0.164 |
| Cr | 148.1 | 155.7 | 152.6 | 150.7 | 4.072 | 0.614 |
| Cu | 1436 | 1473 | 1578 | 1509 | 43.46 | 0.153 |
| Fe | 6.89 × 104 | 7.20 × 104 | 7.06 × 104 | 6.55 × 104 | 3.86 × 103 | 0.672 |
| Mg | 1.25 × 105 | 1.35 × 105 | 1.29 × 105 | 1.33 × 105 | 3.77 × 103 | 0.307 |
| Mn | 1141 | 1169 | 1221 | 1179 | 79.01 | 0.914 |
| Ni | 66.7 | 70.1 | 67.9 | 68.0 | 2.220 | 0.754 |
| Sb | 0.077 a | 0.408 ab | 0.582 b | 0.613 b | 0.116 | 0.012 |
| Se | 232.9 | 316.4 | 236.8 | 301.5 | 29.76 | 0.125 |
| Sr | 696.9 | 752.9 | 725.0 | 697.4 | 34.28 | 0.618 |
| V | 104.7 a | 114.2 b | 114.4 b | 112.7 b | 2.173 | 0.016 |
| Zn | 4.00 × 104 | 4.15 × 104 | 4.22 × 104 | 4.20 × 104 | 1.21 × 103 | 0.577 |
C: no additive, Q2, Q4 and Q8: 200, 400 and 800 mg quercetin per kg of feed, respectively. a,b means in a row sharing no common superscript differ significantly (p < 0.05).