Arroz integral, selênio orgânico e vitamina E em dietas para frangos de corte e óleo ácido de soja para codornas

Abstract

Two experiments were carried out to evaluate the effects of different components of poultry nutrition on performance and final quality of meat and eggs. In the first experiment, in a 2x2x2 factorial treatment arrangement the effects of brown rice grain as corn grain replacer in diets supplemented or not with α-tocopherol (VE) and Organic selenium (SeO) on performance and meat quality of broilers was examined. A total of 200 Cobb broilers were fed after 21 days-old with the following experimental diets: T1) corn + 0 mg SeO + 0 VE (control); T2) corn + 200mg/kg VE + 0 SeO; T3) corn + 0,3 ppm SeO + 0 VE; T4) corn + 200mg/kg VE + 0,3 ppm SeO; T5) brown rice + 0 mg SeO + 0 VE; T6) brown rice + 200mg/kg VE + 0 SeO; T7) brown rice + 0,3 ppm SeO + 0 VE; T8) brown rice + 200mg/kg VE + 0,3 ppm SeO. The results showed that corn can be replaced by brown rice without affecting performance, with exception of meat color that decreases significantly. On the other hand, it was observed a positive interaction between SeO and VE on variables, mainly in broilers fed brown rice. In the second experiment was carried out according to a completely randomized design with 80 dual-purpose quails (Coturnix coturnix coturnix) receiving 5 concentrations of soybean acid oil (0, 25, 50, 75 and 100%) as a dietary replacer for soybean oil up to 8% in the diet formulation. The results showed that supplementation up to 8% with soybean acid oil during 56 days has no effect on performance and egg quality with the exception of color, odor and aftertaste in sensory analysis that showed higher values on birds fed acid oil but without causing product rejection.