[EFFECT OF CROWDING ON BEHAVIOUR OF ATLANTIC SALMON (Salmo salar) IN AQUACULTURE] [Using behaviour as a tool to assess welfare in Atlantic salmon aquaculture production]

Abstract

Aquaculture productions are increasing worldwide and producers are concerned about the welfare of farmed fish. The importance of good welfare cannot be overemphasized throughout the production cycle as each stage has risks and as such must be closely monitored. In this study, a literature review of animal and fish welfare and behaviour was done with special emphasis on the behaviour of Atlantic salmon during crowding operations. A review of existing scientific literature was carried out to identify welfare indicators related to crowding and how they are measured. Overall, technological advancements like a video surveillance system and the usage of cameras installed above and underwater have been used to monitor the behaviour of Atlantic salmon during crowding operations, as it is a robust source of collecting information to help us understand the behaviours that Atlantic salmon may exhibit during crowding. Eventually, a behavioural toolbox was suggested so it might be used by fish farmers and technical staff to assess welfare during the crowding of Atlantic salmon in aquaculture.

Keywords: Atlantic salmon, animal welfare, animal behaviour, farmed fish, welfare, crowding, welfare indicators, stress and welfare assessments.