highly significantP < 0.05
The addition of 1 and 3 g/kg b.wt of JDL extract could upregulate the level of NQO1 at 6 and 12 h of heat stress, and both showed highly significant differences, whereas the level of HO-1 had only shown a difference at 6 h of heat stress, with 1 g/kg b.wt ( P < 0.05) and 3 g/kg b.wt ( P < 0.01).