Coping with suboptimal water temperature: modifications in blood parameters, body composition, and postingestive-driven diet selection in Nile tilapia fed two vegetable oil blends

The world tilapia production faces seasonal variations. However, very few nutritional studies have addressed suboptimal temperature. We evaluated the effect of two temperatures (20 or 30 °C) and vegetable oil blends (one rich in corn ( COR ) one linseed LIN )) on growth, body composition, blood parameters using a 2 × factorial design with following treatments: COR-20; LIN-20; COR-30; LIN-30 Trial 1) . In addition, we also postingestive signals dietary oils when organoleptic properties diets were isolated ). 1, 256 fish (15.36 ± 0.14 g) placed 16 aquariums submitted during days to designs: LIN-30. established independent water recirculation systems. 2, 96 (34.02 0.79 12 subjected same experimental but evaluate feeding behavior. They allowed select encapsulated provided different halls if diet preferences are influenced by signals. As 1 results show, had no significant effects protein use, centesimal °C induced best performance deposition P < 0.05). LIN-20 showed lower very-low-density lipoprotein cortisol, higher high-density HDL ), aspartate aminotransferase AST alanine ALT triglycerides TG than COR-20 COR-30 presented HDL, AST, ALT, TG, cortisol fed C20:5n-3 EPA n-6 high n-3 highly unsaturated fatty acid. ? polyunsaturated acid was at °C. Finally, clear intake regulation preference for 0.05), regardless short, lipid sources influence performance; however, temperature affects carcass as well acids profile. Notably, can suggest metabolic issues, contributing animal behavior knowledge.