Extratos etanólicos de manga como antioxidantes na alimentação de poedeiras

Abstract

The objective of this work was to evaluate the effects of ethanol extracts of mango seeds and peel on laying hen performance, egg quality, and egg lipid stability. A total of 180 Hisex White hens were randomly distributed in six treatments, with five replicates of six birds. The treatments consisted of: ration without antioxidant; ration with 200 ppm butylated hydroxytoluene (BHT); ration with 200 or 400 ppm of mango peel extract (Ecas); and ration with 200 or 400 ppm of mango seed extract (Ecar). Feed intake, egg production, egg weight, produced egg mass (gram by bird per day), feed conversion, and egg quality were evaluated. Yolk lipid oxidation during storage was determined by quantification of thiobarbituric acid-reactive substances. Birds fed diet without antioxidants produced eggs with the lowest Haugh unit values and the highest lipid oxidation of yolk. Ecas at 400 ppm and Ecar at 200 or 400 ppm were effective to prevent oxidative damage of eggs during storage and may be used in the diet of laying hens as a replacement for synthetic antioxidant.