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Correlation coefficients and p‐values between circulating retinol, zinc (Zn), and total protein (TP) in Asinara white donkeys. No statistic significance was pointed out with blood serum concentrations of Zn and TP, whereas a statistically significant positive correlation was found between Zn and TP circulating levels
| Correlations p‐value | Retinol (μg/ml) | Zn (mg/dl) |
|---|---|---|
| Zn (mg/dl) | −0.276 | |
| 0.172 | ||
| TP (g/L) | −0.294 | 0.670 |
| 0.137 | 0.000 |
