Abstract
The aim of this study was to investigate the effects of exogenous enzyme xylanase supplemented with an energy restricted diet on carcass characteristics of broiler chickens. Two hundred one-day-old Ross 308 broilers were randomly divided into four groups (50 birds each) with two replicates each. The control group (T1) was fed a diet based on corn and soybean meal. The second group received a low energy diet (200/kcal) (T2). In the third trial, xylanase (250 g/t) was fed with a low energy diet (200/kcal) (T3). The fourth treatment fed a basal diet + xylanase enzyme (250g/ton) (T4). The carcass characteristics and edible tissue of gizzard, liver and heart in the T4 and T3 groups showed a significant improvement (P≤0.05) compared to the other groups. In conclusion, addition xylanase enzyme with a low-energy diet augmented broiler chickens’ productivity, improved carcass characteristics and edible tissue organ