Thirty-two (32) New Zealand breed rabbits of both sexes, made up of sixteen (16) males and females were used to investigate, the growth and carcass characteristics of weaner rabbits fed four (4) dietary levels of Leucaena leucocephala leaf meal (LLLM). Treatments 1,2,3 and 4 received 0,10,20 and 30% LLLM, respectively. The animals were randomly divided into 4 groups blocked by sex of 2 animals per replicate, in a Randomized Completely Blocked Design (RCBD).Only the average daily feed intake did not differ between dietary treatments (p>0.05), However, the average daily weight gain was least (p<0.05) in rabbits fed 30% LLLM (8.00g/d) compared to the other LLLM based-diets (13.8,11.2, 8.91 g/d) in T1, T2, T3 respectively. There was significant difference (P<0.05) in the final body weight (1152g,1025g,913g,868g respectively) in rabbits fed the diets T1-T4. There was significant difference (P<0.05) in the feed conversion rate (5.15,6.08,7.25 and7.71 respectively) in rabbits fed the diets T1-T4. There was also significant difference (P< 0.05) on the feed cost per kg (N) as Treatment 4 feeds was cheaper (N59),than T3,T2 and T1 whose feed costs were N68,N76 and N82 respectively. Feed cost per gained was highest in rabbits fed based diet 30% LLLM(N156) and 20% LLLM.The effect of sex on body weight gained, feed conversion ratio, daily feed intake, feed cost per Kg feed depict no significant (P>0.05) difference. It was concluded that bucks performed better than the does.