Effect of Supplementing Feed Emulsifier on the Digestibility of Energy and Performance of Broiler Chicken Fed Sub-Optimal Levels of Metabolizable Energy
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Authors
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S. V. Rama Rao
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K. Nagaraja Kumari
College of Veterinary Science, C V Sc, Gannavaram, SVVU, Vijayawada, AP
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S. Anusha
Sri Ramadhootha Poultry Research Farm Pvt Ltd, Hyderabad, India
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T. Srilatha
College of Veterinary Science, P.V.N.R. Telangana Veterinary University, Rajendranagar, Hyderabad, India
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S. Sai Pavan
Sri Ramadhootha Poultry Research Farm Pvt Ltd, Hyderabad, India
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D. Nagalakshmi
College of Veterinary Science, P.V.N.R. Telangana Veterinary University, Rajendranagar, Hyderabad, India
Keywords:
Broiler chicken, Carcass parameters, Emulsifier, Energy digestibility Performance.Abstract
Feed emulsifier improves the digestibility of the diet, thereby reducing dietary nutrient requirements. A broiler experiment was conducted to study the effect of supplementing graded concentrations of feed emulsifier on the growth performance, carcass traits, and ileal digestibility of energy in broiler chicken (1- 42d of age) fed sub-optimal levels (less 0.42 MJ/kg) of metabolizable energy (ME). Broiler male chicks (n=1250; Cobb-430) at day old were randomly allotted to five dietary groups, each with 10 replicates having 25 broiler chicks in each pen (replicate). Maize-soybean meal-based diet with the recommended concentrations of nutrients (control diet, CD) was prepared. A basal diet (BD) with sub-optimal concentrations of ME (reduced energy by 0.42 MJ/kg) was prepared. A commercial feed emulsifier (lyso-phosphatidyl choline-5% and phosphatidylcholine–5%) was supplemented to the low energy BD at four graded concentrations (0, 100, 200, and 300g/ton). All the diets were fed ad libitum from day 1 to 42d of age. The performance data indicated a trend of linear (P 0.056) increase in feed efficiency (FE) with the dose of feed emulsifier in the BD. Contrast analysis revealed that the FE at the highest emulsifier concentration (300g/ton) was comparable to that of the CD fed group. The breast meat weight was reduced in groups fed the BD. The ileal digestibility of energy improved with the emulsifier supplementation (100 or 200g/ton) compared to those fed the CD. Based on the results, it is concluded that supplementation of the feed emulsifier (300g/ton) could reduce the dietary requirement of ME (by 0.42 MJ/kg) in the broiler chicken diet without affecting feed efficiency and carcass traits. The beneficial effects of feed emulsifier may partly be associated with the increased ileal digestibility of dietary energy.
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