Effects of Aspergillus oryzae fermented crude enzyme preparation on growth performance and digesta viscosity in broilers

An experiment was conducted to study the effect of crude enzyme preparation on growth performance and digesta viscosity in broilers fed corn-soybean diets and corn-wheat-soybean diets.A total of 960 1-day-old broilers were randomly allocated in to four treatments.Each treatment had 8 replicates,with 30 birds per pen.Crude enzyme preparation reduced feed conversion rate(FCR)(P0.05).Average daily gain(ADG) and body weight(BW) were numerically increased(P0.10) for broilers fed the diet supplemented with crude enzyme preparation.The digesta viscosity of corn-wheat-soybean diets decreased with the addition of crude enzyme preparation(P0.05).The results suggested that crude enzyme preparation can improve growth performance in broilers.