evaluation of three commercial multi-enzymes based on their matrix value on growth performance and some characteristics of gastrointestinal tract of broiler chicks fed wheat/barley-based diet

in this research the effect of feeding wheat/ barley based diets supplemented with three commercial enzymes containing xylanase and ?-glucanase activities and including matrix value their on performance and gastrointestinal tract size of broiler chicks was investigated. a total of 260-day-old male broiler chicks (ross 308) were allocated to 5 treatment groups, with 4 replicates per treatment and 13 birds per replicate in a rcb design. results showed that only addition of enzymes b and c to wheat/ barley based diet increased average daily feed intake significantly (p