Viabilidade do óleo ácido de soja associado a lecitina em dietas para codornas de postura

Abstract

This study was conducted to evaluate diets containing acid and degummed soybean oil supplemented or not with lecithin and its effects on the quality of diets and efficiency on productive performance and quality of eggs of laying quails during six productive cycles. In order to evaluate productive performance and internal and external quality of eggs, a total of 192, 54-days-old Japanese quails were used. The birds were allotted in pairs to 96 metallic cages containing nipple waterers and manual metallic feeders. Each cage containing two birds was considered the experimental unity. Two types of soybean oil were tested (acid and degummed) (OAS, ODS, respectively), with two levels of supplementation (4 and 8%) with or without lecithin (LEC) (1 or 0%). The treatments were: T1 – basal diet (DB) with 4% OAS; T2 – DB with 4% OAS and 1% LEC; T3 – DB with 8% OAS; T4 – DB with 8% OAS and 1% LEC; T5 – DB with 4% ODS; T6 – diet with 4% ODS and 1% LEC; T7 – diet with 8% ODS; T8 – diet with 8% ODS and 1% LEC.To verify the effect of storage periods about quality of the diets they were evaluated chemistry composition, free acidity and coefficient of specific extinction (K232 and K270).during different storage periods (0, 15, and 30 days). For this assessments was added the a negative control (without oil) The LEC acted improving harnessing the nutritional components when associated with diet 8% OAS about egg weight and production. The association of LEC with 8%OAS demonstrated be effective in maintaining the egg mass and improving mass conversion. Neither negative effect can be related to the use of OAS about the internal egg quality, and external egg quality there was a reduction of thickness.The following evaluations were performed: chemical composition, free acidity, and coefficient of specific extinction (K232 and K270). High variations were observed for the amount of mineral matter among treatments due to the use of inert in the diets. Neither the treatments nor the storage periods affect dry matter and crude protein. Significant difference among treatments were observed for ether extract. Diets formulated with OAS showed lower index of free acidity along with higher amounts of primary and secondary products of peroxidation. Storage period affected these variables.