Effects of energy-deficient diet supplemented with exogenous emulsifier on growth performance, nutrient digestibility, blood lipid profile, and carcass yield of broiler chickens
2024
Nacario, J.A.R.
This study aims to investigate the effects of an energy-deficient diet supplemented with an exogenous liquid emulsifier on the growth performance, nutrient digestibility, blood lipid profile, carcass yield, and economics of broiler chickens. The study was conducted at the University of the Philippines Los Baos [Philippines]. A total of 240 heads of day-old Ross 308 chickens were used for the feeding trial and 24 heads for the digestibility trial. The chickens were randomly allocated to three dietary treatments, with ten replicates per treatment. The treatment diets consisted of a positive control (PC), a PC reduced with 100 ME (kcal/kg) (NC), and NC with 0.02% exogenous liquid emulsifier (NCE). The study lasted for 35 days, and data were collected on growth performance, nutrient digestibility, blood lipid profile, and carcass yield. The results showed that broiler chickens in NC and NCE diets at d 10 had significantly higher (p0.05) body weight gain. There was a higher (p0.05) ADFI of NC at d 11-24 and d 0-35 whereas both NC and NCE have higher (p0.05) ADFI at d 25-35. Additionally, the NC and NCE significantly increased (p0.05) the ATTD of crude fat and reduced (p0.05) the blood cholesterol, triglyceride, and LDL levels of birds. The carcass yield was significantly higher (p0.05) in NC and NCE. Additionally, birds in NC had higher economic efficiency. In conclusion, the inclusion of an exogenous liquid emulsifier at 0.02 % in the 100 kcal/kg-deficient diet did not improve the growth performance, nutrient digestibility, blood lipid profile, carcass yield, and diet economics of broiler chickens.
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