Dietary antioxidants used in livestock systems are considered the key to improving animal production. In a search for unconventional dietary supplements for improving animal health and production, the current study assumed to investigate the effect of two concentrations (10 or 20 g/kg diet) of green tomato powder (GTP) in the diet of New Zealand white growing rabbits on physiological, hematological, biochemical and antioxidant parameters. A total of 24 unsexed New Zealand white growing rabbits (45 days old) were randomly divided into three experimental groups (8 rabbits each). The first group considered as a control group (no additives). The second and the third group were received GTP in the diet by 10 or 20 g/kg diet, respectively during 8 weeks. GTP (10 or 20 g/kg diet) administration exhibited a substantial positive effect on growing rabbits, including strengthening RBCs, Hb%, PCV%, and serum protein concentration, reduce serum lipids, enlarge activity of antioxidant enzymes and decrease malondialdehyde (MDA) level as a reliable marker of lipid peroxidation. These findings suggest that GTP has a potential effect of improving the health and production of New Zealand white growing rabbits.