Emulsificantes em dieta para frangos de corte com diferentes fontes lipidicas

Abstract

The inclusion of emulsifiers in the diet of broilers can improve lipid digestion and increase metabolizable energy, positively impacting bird performance. This study evaluated the effect of different emulsifiers and oil sources on performance, nutrient digestibility, meat quality and biochemical profile in broilers. A total of 1080 chicks were used, which received different diets, distributed in a factorial design (3x2): without emulsifier, emulsifier 1 - sorbitan ester and emulsifier 2 - soy lecithin, with the addition of two different types of soybean oils (degummed and acid), totaling six treatments, with 10 replicates and 18 birds per experimental unit. The use of soybean oil contributed to a higher average weight and more efficient feed conversion in broilers. The sorbitan ester emulsifier showed potential for reducing initial lipid oxidation. Significant interactions between oil sources and emulsifiers positively impacted nutrient digestibility and bird performance, highlighting the combination of soybean oil with emulsifiers as a promising strategy to optimize feed efficiency. At 21 days, birds fed with soybean oil showed greater weight gain and better feed conversion, with these results maintained at 42 days. Soybean oil also enhanced lipid digestion, while mineral digestibility was higher with acid oil combined with the sorbitan ester emulsifier. In the biochemical profile, soybean oil increased HDL levels, and acid oil elevated bilirubin and triglycerides. Carcass yield and meat quality did not show significant differences between treatments.