Óleo de fritura e adição de Timol e Carvacrol na alimentação de codornas de corte

Abstract

To evaluate the effects of replacing soybean oil with frying oil and the addition of thymol and carvacrol in the diet of meat quails, 585 quails, 7 days old, were used, distributed in a completely randomized design in a factorial scheme (3 x 3), totaling 9 treatments with 5 repetitions of 13 birds. The treatments consisted of diets obtained from the studied factors: three levels of replacement of soybean oil with frying oil (0, 50, and 100%) and three levels of inclusion of the antioxidant additive based on thymol and carvacrol (0, 0.10, and 0.30 g/kg). The performance of the birds, carcass characteristics, oxidative stability of the liver and fresh and stored meat, as well as economic viability, were evaluated. The results showed that the total replacement of soybean oil with frying oil did not affect feed intake, weight gain, or feed conversion of the birds, indicating that this replacement may be feasible if the frying oil used has a nutritional value equivalent to soybean oil. However, it was observed that the total replacement of soybean oil with frying oil increased TBARS values in the liver and meat, indicating higher lipid oxidation. The inclusion of the additive based on thymol and carvacrol, especially at the dose of 0.30 g/kg, significantly reduced TBARS values in both the liver and meat, demonstrating its effectiveness in preventing oxidative stress. In the economic viability analysis, the total replacement of soybean oil with frying oil, combined with the inclusion of the antioxidant, proved advantageous, reducing feed costs and improving economic efficiency. It is concluded that the partial or total replacement of soybean oil with frying oil can be carried out without compromising the performance and carcass characteristics of quails, with the inclusion of antioxidants based on thymol and carvacrol recommended to ensure oxidative stability of the liver and meat.