Performance of broiler chicken fed multicarbohydrases supplemented low energy diet

Aim: Objective of this study was to investigate the effect of multicarbohydrases supplementation on performance of broilers fed low energy diet. Materials and Methods:A total of 75 days old chicks were selected and randomly divided into three treatments groups (T 1 , T 2 , and T 3 ); each group contained 25 chicks distributed in five replicates of five chicks each.T 1 group (positive control) was offered control ration formulated as per Bureau of Indian Standards recommendations.In T 2 group (negative control) ration, metabolizable energy (ME) was reduced by 100 kcal/kg diet.T 3 group ration was same as that of T 2 except that it was supplemented with multicarbohydrases (xylanase at 50 g/ton+mannanase at 50 g/ton+amylase at 40 g/ton).Feed intake and body weight of all experimental birds were recorded weekly.Metabolic trial was conducted for 3 days at the end of experiment to know the retention of nutrients.Results: Significant improvement (p<0.01) was observed in total weight gain, feed conversion efficiency, and performance index in broilers under supplementary group T 3 as compared to T 1 and T 2 groups.Retention of crude protein and ether extract was significantly increased (p<0.05) in T 3 group supplemented with multicarbohydrases as compared to other groups.Retention of dry matter, crude fiber, and nitrogen-free extract was comparable in all the three groups.Significantly highest dressed weight, eviscerated weight, and drawn weight (% of live body weight) were observed in multicarbohydrases supplemented T 3 group, however it was comparable in T 1 and T 2 groups.Conclusion: It was concluded that the supplementation of multicarbohydrases (xylanase at 50 g/ton+mannanase at 50 g/ton+amylase at 40 g/ton) in low energy diet improved overall performance of broilers.