Response of Broiler Chicks to Low-Energy Diet Supplemented With Lecithin or Xylanase Enzyme

Two experiments were conducted to study the effect of adding soy-lecithin or xylanase low-energy diet on broilers growth performance, nutrient digestibility, intestinal lipase enzyme activity and economical efficiency. A total number 256 unsexed Cobb500 broiler chicks, a day old, classified into two equal experiments, 128 chicks each (4 treatments × 4 replicates 8chicks). In experiment, divided groups as follows: - 1st group fed basal served control which recommended energy diet, 2nd low (100 Kcal / kg diet) than recommendation (LED), 3rd 4th added with 0.5g lecithin 1.0g respectively (EXP.1). While, supplemented 0.1g 0.2g (EXP.2). The trail was lasted at 35 days age. results revealed that, LED + (EXP.1) (EXP.2) recorded significantly higher BWG better FCR during overall period groups. both there is gradual increase in EE% digestibility coefficient, efficiency by increasing addition level either xylanase. It could be concluded that enriching can improve enhanced net profit.