Coprodutos do óleo de soja na dieta de codornas: Impactos sobre a qualidade durante o armazenamento

Abstract

This study aimed to evaluate the effect of storage time (0, 15 and 30 days) on the degradability of nutrients in quail diets formulated with acidulated soybean oil supplemented or not with lecithin. Eight experimental diets were evaluated: 1) basal diet (BD) with 4% acidulated soybean oil (ASS); 2) BD with 4% ASS + 1% lecithin (LEC); 3) BD with 8% ASS; 4) BD with 8% ASS + 1% LEC; 5) BD with 4% degummed soybean oil (DSO); 6) BD with 4% DSO + 1% LEC; 7) BD with 8% DSO; 8) BD with 8% DSO + 1% LEC. Six samples of each diet were collected to assess the degradability of nutrients on zero day and after 15 and 30 days of storage. The chemical composition (dry matter, crude protein and fat), free acidity and specific extinction coefficients (K and K) in all diets were evaluated. The storage time influenced the dry matter content, and zero time presented the lowest averages for treatments 3, 4 and 5. A significant interaction between the diet and the time factors was observed for the acidity variables and extinction coefficients. Diets with acidulated soybean oil showed higher acidity and primary and secondary peroxidation products than the degummed soybean oil diets. Crude protein and fat were not affected by storage time in any of the diets.