1. Coping with suboptimal water temperature: modifications in blood parameters, body composition, and postingestive-driven diet selection in Nile tilapia fed two vegetable oil blends
- Author
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E. de Fátima Ferreira Martins, C.K.L. de Almeida, Renan Rosa Paulino, Martin Bessonart, Raquel Tatiane Pereira, C.A.L. de Almeida, Patrícia Rosa, Rodrigo Fortes-Silva, de Almeida C.A.L., de Almeida C.K.L., Martins E. de F. F., Bessonart Martín, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Ecología y Ciencias Ambientales., Pereira R.T., Paulino R.R., Rosa P.V., and Fortes-Silva R.
- Subjects
food.ingredient ,040301 veterinary sciences ,SF1-1100 ,Subtropical aquaculture ,0403 veterinary science ,Nile tilapia ,food ,Fish Oils ,Linseed oil ,Adaptation, Psychological ,Animals ,Plant Oils ,Food science ,Fatty acids ,Proximate analysis ,Unsaturated fatty acid ,chemistry.chemical_classification ,biology ,Chemistry ,0402 animal and dairy science ,Temperature ,Water ,Tilapia ,Diet self-selection ,04 agricultural and veterinary sciences ,Factorial experiment ,Cichlids ,biology.organism_classification ,040201 dairy & animal science ,Diet ,Animal culture ,Feed formulation ,Vegetable oil ,Body Composition ,Animal Science and Zoology ,Corn oil ,Polyunsaturated fatty acid - Abstract
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 two vegetable oil blends (one rich in corn oil (COR) and one rich linseed oil (LIN)) on tilapia growth, body composition, and blood parameters using a 2 × 2 factorial design with the following treatments: COR-20; LIN-20; COR-30; LIN-30 (Trial 1). In addition, we also evaluated the effect of postingestive signals of dietary oils when the organoleptic properties of diets were isolated (Trial 2). In the Trial 1, 256 fish (15.36 ± 0.14 g) were placed in 16 aquariums and submitted during 30 days to the 2 × 2 factorial designs: COR-20; LIN-20; COR-30; LIN-30. The temperatures were established in two independent water recirculation systems. In the Trial 2, 96 fish (34.02 ± 0.79 g) were placed in 12 aquariums and subjected to the same experimental design of Trial 1, but to evaluate fish feeding behavior. They were allowed to select the encapsulated diets provided in different feeding halls to evaluate if diet preferences are influenced by postingestive signals. As the Trial 1 results show, diets had no significant effects on growth, dietary protein use, and body centesimal composition, but 30 °C induced the best performance and protein deposition (P
- Published
- 2021