ABSTRACT
The experiment was conducted to study the effect of dietary supplementation of critical amino acids and multi-enzyme with reduced levels of energy and protein diet on carcass and blood biochemical performance in broiler chicken. Three hundred broiler chicks were allotted to five dietary treatments of three replications and 20 birds in each replication. The control (T0) were fed with standard diet, T1 (5% low CP and energy than standard with balancing of lysine and methionine), T2 (T1 + Multi-enzyme), T3 (10% low CP and energy than standard with balancing of lysine and methionine), T4 (T3 + Multi-enzyme).The dressing percentage and edible meat percentage were significantly more in T2 group. The breast meat percentage of the control group was comparable with T2 group. The result showed that the significantly higher (P<0.05) gizzard weights in groups receiving enzyme combination supplementation as compared to control group (T0) irrespective of the energy-protein levels. The mean value of total protein, albumin, globulin and blood urea nitrogen of all the experimental birds were found to be statistically similar with that of the control group. The treatment group T2 found to be effective and economical