Fonte de ácidos graxos poli-insaturados em substituição ao óleo de soja na dieta de codornas de corte sobre desempenho, perfil de ácidos graxos e oxidação lipídica.

Abstract

The aim of this study was to evaluate fish oil as a source of PUFAS compared to soybean oil in the diet on performance, carcass yield, fatty acid profile and lipid oxidation of breast meat from European quails. One hundred and twenty European quails, average initial weight 90.97 ± 0.5 g, were used during a growing period, ranging from 14 to 42 days of age, distributed in a completely randomized design with three treatments and five replicates with eight birds each. The experimental diets consisted of the conventional diet with 2% soy oil (OSJ) and the test diets, one supplemented with 2% fish oil (OPX) and the third diet contained a mix composed of 1% OSJ and 1 % of OPX. The quail fed a diet supplemented with fish oil had similar performance compared to those quails fed a diet with soybean oil (p>0.05). The carcass characteristics, with the exception of the thigh yield, were not influenced by the lipid sources supplemented in the diet of the quails (Table 3) (P>0.05), while maintaining the energy level of the diets. The results of the fatty acid profile of the breast meat of quail are different due to the composition of polyunsaturated fatty acids – PUFAS from the supplemented lipid sources in the feed. Fatty acids, eicosapentaenoic – EPA (C20:5n3) and docosahexaenoic – DHA (C22:6n3) were detected only in the meat of quails that consumed a diet with fish oil, isolated or in a mix with soybean oil. The values of TBARS and Wolf of the meat of the quails of all diets remained within the acceptable parameters of consumption. It is recommended to supplement the diet with fish oil as it enriches the breast meat of the quails without affecting the performance and carcass characteristics, keeping the oxidation within acceptable storage time.