5 research outputs found
Cognitive enrichment to increase fish welfare in aquaculture: A review
While most animals have received increasing attention for their welfare, consideration for fish welfare has started more recently, particularly since the recognition that fish have emotions and complex cognitive abilities. Housing conditions in fish farms do not always meet fish ethological requirements as these conditions lack sufficient sensory and cognitive stimulations. An approach to address this issue involves enriching the rearing environment by including social, food, physical, or cognitive stimuli. Cognitive enrichment (CE) is a recent but promising concept to improve fish welfare by manipulating the predictability and controllability of their environment. It relies not only on the ability of fish to predict positive and negative events but also on their ability to perform and succeed in operant conditioning. In our present review, we identified four categories of CE: (i) feeding predictability, (ii) predictability of a negative event, (iii) operant conditioning through self-feeders, and (iv) learning experiences. Existing CEs were reviewed for their effects on behaviour, brain, zootechnical performances, and welfare in terms of physiological stress or physical integrity in the aquarium and farmed teleost fish. The review highlights unbalanced categories and the lack of adequate multidisciplinary analyses to assess the effects of these categories on fish welfare. Providing free access to self-feeders seems to be a good strategy, given its positive effects on zootechnical and physiological parameters. Other categories showed contradictory and species-dependent results; hence, further studies are required to confirm the benefits of CE on fish welfare. Finally, further investigations should also validate current CE systems and assess other strategies that may trigger positive emotions in fish
Cognitive enrichment to increase fish welfare in aquaculture: A review
International audienceWhile most animals have received increasing attention for their welfare, consideration for fish welfare has started more recently, particularly since the recognition that fish have emotions and complex cognitive abilities. Housing conditions in fish farms do not always meet fish ethological requirements as these conditions lack sufficient sensory and cognitive stimulations. An approach to address this issue involves enriching the rearing environment by including social, food, physical, or cognitive stimuli. Cognitive enrichment (CE) is a recent but promising concept to improve fish welfare by manipulating the predictability and controllability of their environment. It relies not only on the ability of fish to predict positive and negative events but also on their ability to perform and succeed in operant conditioning. In our present review, we identified four categories of CE: (i) feeding predictability, (ii) predictability of a negative event, (iii) operant conditioning through self-feeders, and (iv) learning experiences. Existing CEs were reviewed for their effects on behaviour, brain, zootechnical performances, and welfare in terms of physiological stress or physical integrity in the aquarium and farmed teleost fish. The review highlights unbalanced categories and the lack of adequate multidisciplinary analyses to assess the effects of these categories on fish welfare. Providing free access to self-feeders seems to be a good strategy, given its positive effects on zootechnical and physiological parameters. Other categories showed contradictory and species-dependent results; hence, further studies are required to confirm the benefits of CE on fish welfare. Finally, further investigations should also validate current CE systems and assess other strategies that may trigger positive emotions in fish
Fild'Or : Bases génétiques pour l'amélioration de la qualité de la daurade royale d'élevage Sparus aurata
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5 Scénarios pour la pisciculture française en 2021
LâInra a souhaitĂ© engager une rĂ©flexion prospective sur lâĂ©volution de diffĂ©rentes filiĂšres animales sur le territoire national afin de mieux programmer les recherches. La prospective sur la pisciculture a Ă©tĂ© initiĂ©e au sein de la commission Inra filiĂšre Poissons avec la volontĂ© d'associer diffĂ©rents acteurs de la filiĂšre. Chercheurs de lâInra et des autres instituts de recherche dans le domaine piscicole se sont joints Ă des partenaires professionnels et institutionnels pour Ă©laborer une vision partagĂ©e des futurs possibles de la pisciculture en France en 2021. Lâobjectif est de disposer dâimages cohĂ©rentes et contrastĂ©es de lâavenir afin dâidentifier les dĂ©fis Ă relever et dâintĂ©grer les enjeux locaux et nationaux dans le contexte international pour choisir les orientations de recherche et hiĂ©rarchiser les prioritĂ©s