Óleos essenciais como substituintes de antibióticos promotores de crescimento em frangos de corte: perfil de soroproteínas e peroxidação lipídica

摘要: Essential oils are an alternative to growth promoters based on antibiotics used in animal diets, due its antimicrobial potential, and immunomodulatory properties. Serum proteins electrophoresis plasma lipid peroxidation were evaluated broilers fed with diets supplemented or essential from oregano (Origanum vulgare L.), sage (Salvia officinalis rosemary (Rosmarinus L.) pepper (Capsicum frutescens crude extract (OLES). The animals (n=910) distributed within five treatment groups seven replicates containing 26 birds each one: control group (diet without additives); the receiving antibiotic promoter diet (Tatb); T50, T100 T150 (supplemented 50, 100 150mg kg-1 of OLES, respectively). After 42 days, randomly selected for serum electrophoretic fractionation evaluation by thiobarbituric acid reactive species (TBARS) test. Total globulins (T150), betaglobulin fraction (Tatb T150) TBARS levels that received OLES (P<0.05) presented a decrease relation group. These results suggests lower stimulus humoral immune response at higher dose as occurred Moreover, it and, consequently, oxidative damage caused use broiler chickens.