Ninety, 7 weeks of age weaning New Zealand White (NZW) rabbits with similar average live body weight (745 g) were used in this study. Rabbits were randomly distributed into 10 equal groups (each group contains 9 animals) and housed in separate cages (3 rabbits in each). The experimental groups were fed randomly on one of the 10 formulated experimental diets used. Sodium nitrate addition for these diets was at two levels. The first level was 0.0 % of the total mixed diet for diet 1 (R1), diet 2 (R2), diet 3 (R3), diet 4 (R4) and diet 5 (R5), while the second level was 2 % of the total mixed diet for diet 6 (R6), diet 7 (R7), diet 8 (R8), diet 9 (R9) and diet 10 (R10). The diets R1 and R6 were without feed additives, while the four feed additivees which were used, sodium sulphate (0.2 % of the total mixed diet), bentonite (clay) (2.0 % of the total mixed diet, yeast (0.25 % of the total mixed diet) and prebiotic (0.2 % of the total mixed diet) for diets R2, R3, R4 and R5 respectively and also, in diets R7, R8, R9 and R10 respectively. The main results showed that live body weight was higher with feeding on R1, R4. R5, R9 and R10 (1199, 1104.0, 1149, 1114 and 1142 g, respectively) than feeding on the other experimental diets. The average daily gain from 7 to 14 weeks were higher when feeding on the control without NaNO₃ (R₁) (24.48 g/h/d) or added yeast or prebiotic as shown in R₄ or R₅ (22.54 and 23.46 g/h/d, respectively) and with feeding on NaNO₃ with added yeast or prebiotic (R₉ or R₁₀) (22.73 and 23.32 g/h/d, respectively) than the others R₂ or R₃ or R₆ or R₇ and R₈ diets, being 21.87, 20.69, 22.09, 20.10 and 22.38 g/h/d, respectively. The average DMI from 7 to 14 weeks of age when feeding the experimental diets was ranged from 89.96 g/h/d with feeding on R₇ to 93.55 g/h/d with feeding on R₆. The average feed conversion ratio (FCR) from 7 to 14 weeks was the highest when feeding on R₂, R₃, R₄, R₆, R₇, R₈ and R₉ (4.25, 4.49, 4.09, 4.25, 4.33, 4.02 and 4.09 g DMI/g DG, respectively), while the lowest ratio values were with feeding on R₁ and R₁₀ (3.81 and 3.99 g DMI/g DG, respective). The relative economic efficiency from R₁ of the experimental diets were 76.16, 63.73, 77.25, 68.73, 76.77, 58.29, 76.01, 78.04 and 66.37 % for R₂, R₃, R₄, R₅, R₆, R₇, R₈, R₉ and R₁₀, respectively. Conclusively, the present study showed that the live body weight was higher with feeding on diet without NaNO₃ or without feed additives (R1) or with added yeast (R4) or prebiotic (R5) or with NaNO₃ and with added yeast (R9) or prebiotic (R10). In general, feeding these feed additives need some trials to adjust the economic efficiency.