Fig. 2

The effects of EP-Zn supplementation on serum biochemical indices of broiler chickens on d 21. Values are presented as mean ± SEM; n = 8. * Indicates a significant difference between treatment and control groups at P < 0.05. AST: Aspartate aminotransferase; TP: total protein; LDL: Low-density lipoprotein; HDL: High-density lipoprotein