Effect of amylase supplementation on performance of broiler chicken

An experiment was conducted to study the influence of feeding exogenous α-amylase supplemented diets on performance traits in broiler chicken. Seventy five, day old chicks were randomly divided into 3 treatments (T₁ T₂ and T₃), each consist of five replicates with five chicks in each replicate. Diet of T₁ group was standard broiler diet (positive control diet) without enzyme supplementation. Diet of group T₂ was same as @ except that this diet was deficient in energy by 100 kcal ME/kg diet (negative control diet). Diet of group T₃ was same as T₂ except that this diet was supplemented with α-amylase @ 80 g/ton. At the end of the trial, birds fed amylase- supplemented diet grew faster and had better feed conversion (P<0.05) than broilers fed negative control diet. The retention of proteins was significantly improved by supplementation of amylase in low energy diet. Supplementation of amylase in negative control diet (T₃) significantly (P<0.05) increase the dressed, eviscerated and drawn weights of broilers. It was concluded that amylase supplementation @80 g/ton improved overall performance, digestibility of crude protein and ether extract as well as carcass trait of broilers fed low energy based diets.