Stunning fish with CO2 or electricity: contradictory results on behavioural and physiological stress responses

• Published in: Animal
• Main Authors: A. Gräns, L. Niklasson, E. Sandblom, K. Sundell, B. Algers, C. Berg, T. Lundh, M. Axelsson, H. Sundh, A. Kiessling
• Format: Article in Journal/Newspaper
• Language: English
• Published: Elsevier 2016
• Subjects: welfare; teleost; aquaculture; narcosis; slaughter; Animal culture; SF1-1100; Arctic; Slaughter; Salvelinus alpinus
• Online Access: https://doi.org/10.1017/S1751731115000750; https://doaj.org/article/d00e525cf308460f8827a29fcc34ee74

Studies that address fish welfare before slaughter have concluded that many of the traditional systems used to stun fish including CO2 narcosis are unacceptable as they cause avoidable stress before death. One system recommended as a better alternative is electrical stunning, however, the welfare as...