Effects of Emulsifier and Multi-enzyme in Different Energy Densitydiet on Growth Performance, Blood Profiles, and Relative Organ Weight in Broiler Chickens

Jin Ho Cho, PingYo Zhao, In Ho Kim


This study was conducted to determine the effects of emulsifierand multi-enzyme in different energy density diet on growth performance, blood profiles, and relative organ weight in broiler chickens. A total of five hundred and forty2-d-oldmale Ross broilers (BW of 42.4 ±1.3 g) wereused in a 35-d experiment and randomly divided into 5 treatment groups: 1) NC [low energy diet, 3% tallow, ME = 3000 (1 to 21 d) and 3100 kcal/kg (22 to 35 d)], 2) PC [high energy diet, 5.5% soybean oil, ME = 3150 (1 to 21 d) and 3250 kcal/kg (22 to 35 d))], 3) P1 (NC+0.1% multi-enzyme), 4) P2 (NC + 0.05% emulsifier), 5) P3 (NC + 0.1% multi-enzyme + 0.05% emulsifier). Multi-enzymecontained ?-galactosidase, galactomannase, xylanase, and beta-glucanase. Emulsifier was a commercial product named Prosol® which wassodium stearoyl-2-lactylate.There were 9 replications per treatment with 12 birds per pen. From d 0 to 21, body weight gain (BWG) in PC and P1 treatments increased (P < 0.05) compared with NC treatment. From d 22 to 35, feed intake (FI) was greater (P < 0.05) in P3 treatment than PC treatment. On d 35, triglyceride concentration in PC, P1 and P3 treatments was greater (P < 0.05) compared with NC treatment. No differences were observed on white blood cell (WBC), red blood cell (RBC) and glucose concentration. The relative weight of the spleen was significantly decreased (P < 0.05) in P3 treatment compared with PC treatment. Furthermore, the relative weight of the bursa of Fabricius in P3 treatment was higher (P < 0.05) than PC, P1 and P2 treatments. In conclusion, the results of this study indicate that emulsifier andmulti-enzymein low-density diets can partially improve growth performance, triglyceride, and relative organ weight in broiler chickens, which can counterpart the negative effects caused by the decreased nutrient concentration.

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DOI: https://doi.org/10.5539/jas.v4n10p161

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