An experiment was conducted with 2,112 Ross male broiler chicks, with the objective to evaluate the use of non-nutrient additives (antibiotic, prebiotic and symbiotic) on performance and carcass characteristics of broilers. The birds were distributed in a complete randomized design in 2 × 6 (corn × additive) factorial arrangement, with 12 rations, eight replicates and 22 birds per experimental unit. Diets were based on corn and soybean meal, using in the half the rations standard quality corn (Rations 1 to […]