The effect on growth and carcass quality of increasing level of brewer's grain (0, 20 and 30%) in growing rabbit diet was studied. A total of 180 rabbits (5 weeks old, average live body weight of 860 ± 147g) were divided into three experimental groups of 60 rabbits and housed in collective cages (4 rabbits per cage) until slaughter (77 days). Each group was fed ad libitum, either the control diet (B0) or the experimental diet containing 20% (B20) or 30% (B30)of dried brewers grains (DBG). Health status was not affected by the treatment. Also, growth and ingestion performances did not differ significantly between the 3 groups (individual weight gain=29.2-30.5g /d and feed intake per cage = 379-390 g /d). Feed conversion was higher (P<0.01) in B20 group compared to the 2 other groups (3.92 vs. 3.65). The incorporation of DBG did not alter the carcass characteristics of the groups. Increasing level of brewer's grain until 30%, in partial substitution to soybean meal and decreasing alfalfa and barley grain rates can be used in rabbit diets without effect on health, growth performance or carcass traits.