Two experiments were conducted to evaluate the effect of feeding 70mg/kg、105mg/kg、140mg/kg、175mg/kg、210mg/kg zinc (Zn), from zinc methionine (Met-Zn) and zinc sulfate (ZnSO4), on growth performance, carcass rate, purtenance index, tissue zinc concentration of 1.5-month-old and 2.5-month-old Brittany Rabbits. It can provide scientific basis for the determination of suitable zinc level in practical diet of commercial rabbit in different stages, and it also provide base references to explore the role o...