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The present experiment was carried out to evaluate the effects of Zinc-enriched Spirulina (Zn-Sp) supplementation as an organic Zn source on the growth performance, nutrients digestibility, carcass characteristics, blood parameters and economic efficiency of growing rabbits. A total of forty eight male NZW rabbits (35 days old) were allotted to four groups (12 rabbits for each), 4 replicates (3 rabbits for each). Three levels of 75 and 100 mg Zn-Sp/kg diet) were compared to a control group without Zn-Sp addition. The results have shown that dietary Zn-Sp supplementation caused an increase (P<0.05) in final live body weight at 13 weeks. Supplementation of 75 and 100 mg Zn-Sp improved (P<0.05) body weight gain compared to the control group during the whole experiment period. The increases in body weight gain were 10.93 and 10.63% for 75 and 100 mg Zn-Sp, respectively compared to the control group. On the other hand, at all experimental periods, rabbits fed diets supplemented with 75 and 100 mg Zn-Sp consumed less (P<0.05) feed intake than those fed control diet or 50 mg Zn-Sp. As well as, diets supplemented with Zn at 50, 75 and 100 mg Zn-Sp improved (P<0.05) FCR throughout the experimental period (8weeks). Dietary Zn-Sp supplementation at 100 mg led to a significant increase in all nutrients digestibility In addition; Zn-Sp supplementation had insignificant effect on the CF digestibility. Feeding rabbits on diets supplemented with Zn-Sp at a level of 100 mg/kg DM increased (P<0.05) DCP%, TDN and DE (kcal/kg) compared to the control group. The obtained results also showed that supplementing rabbit diets with Zn-Sp at each tested level increased (P<0.05) hot carcass weight, dressing percentage, total edible parts (%), serum total protein and HDL, serum Zn concentrations, total antioxidant capacity (T-AOC) levels in comparison to the control group. Conversely, a significant decrease (P<0.05) was observed in serum total cholesterol and LDL concentrations compared with the

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