REVUE DE MEDECINE VETERINAIRE, cilt.167, ss.230-239, 2016 (SCI-Expanded)
Essential oils (herbal volatile oils) as alternatives to antibiotics are considered the most powerful natural feed additives. The aim of this study was to determine the effects of volatile oils and their mixtures (VOM) dietary supplementation on the performance, serum and tibia characteristics of broilers. A total of 800 male Ross 308 broiler chicks were equally divided into 8 groups of 100 chicks (10 replicates of 10 chicks each). The study included a control (NC) and diets supplemented with oils according to the following 7 treatments: 200 mg alpha-tocopherol acetate/kg (PC); 100 mg oregano oil /kg (OVO); 100 mg rosemary oil /kg (RVO); 100 mg fennel oil (FVO); oregano oil + rosemary oil + fennel oil - equally mixed - (100, 200, and 400 mg/kg, VOM-1, VOM-2 and VOM-3, respectively). The experiment was conducted for 42 d.