Table 7.
Corrected publication bias of tannin source effect on weaned piglets’ performance and health indices.
| Items | df b | Random-Effects Model | Heterogeneity b | |||
|---|---|---|---|---|---|---|
| Effect Size | p-Value | Q (p-Value) | I2 (%) | τ2 | ||
| Growth performance | ||||||
| Average daily feed intake | 26 | 0.3874 | 0.5039 | 772.74 (<0.0001) | 96.6 | 8.9005 |
| Average daily gain | 27 | −2.0114 | 0.4911 | 1344.43 (<0.0001) | 98.0 | 236.7790 |
| Final body weight | 25 | 0.8494 | 0.0517 | 0.0517 (<0.0001) | 94.7 | 4.6938 |
| Feed conversion ratio | 30 | −0.3920 | 0.4478 | 1415.83 (<0.0001) | 97.9 | 8.1086 |
| Serum antioxidant indices | ||||||
| MDA | 13 | −2.2764 | 0.5254 | 181.67 (<0.0001) | 92.8 | 171.0610 |
| T-SOD | 11 | 1.8200 | 0.0075 | 125.98 (<0.0001) | 91.3 | 4.7714 |
| CAT | 11 | 1.0790 | 0.1289 | 191.54 (<0.0001) | 94.3 | 5.7435 |
| GSH-Px | 8 | 2.6767 | 0.2590 | 174.24 (<0.0001) | 95.4 | 47.3510 |
| T-AOC | 9 | 3.2990 | 0.2666 | 141.13 (<0.0001) | 93.6 | 82.6910 |
| Immune indices | ||||||
| IgA | 4 | 0.9356 | 0.8530 | 485.39 (<0.0001) | 99.2 | 126.7149 |
| IgG | 4 | 5.7818 | <0.0001 | 51.91 (<0.0001) | 92.3 | 9.2207 |
| IgM | 5 | 9.0259 | 0.6023 | 448.01 (<0.0001) | 98.9 | 1783.7486 |
b df: degree of freedom; I2: Higgens statistics; τ2: heterogeneity variance of true effect size; R2: percentage of variation explained by the model.