Blar i forfatter Artikler, rapporter og annet (Norges fiskerihøgskole) "Oppedal, Frode"

Viser treff 1-3 av 3

    • Assessment of long-term implementation of sea lice prevention technologies: efficiency in reducing infestations and impact on fish welfare 

      Bui, Samantha; Stien, Lars Helge; Nilsson, Jonatan; Oppedal, Frode (Research report; Forskningsrapport, 2018-12-21)
      Salmon lice prevention strategies are steering towards passive implementation, and this study aimed to monitor these strategies in commercial cages over time, to determine the efficiency of these approaches and their effect on welfare. Four strategies were tested at a commercial scale at the Centre for Aquaculture Competence (CAC; funded by CAC and FHF), over a 13-month period. The ...

    • Fasting and its implications for fish welfare in Atlantic salmon aquaculture 

      Hvas, Malthe; Kolarevic, Jelena; Noble, Christopher; Oppedal, Frode; Stien, Lars Helge (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-02-20)
      Periods of fasting occur for a multitude of reasons in Atlantic salmon aquaculture. Feed withdrawal is widely used prior to transport, parasite treatments, preslaughter and for depuration purposes in recirculating aquaculture systems. Voluntary fasting is a coping response when fish have poor health or are exposed to poor farm environments. Owing to increased attention to animal welfare in aquaculture, ...

    • The Well – Mixing skirt and freshwater lens concepts with smart-lighting and -feeding to enhance lice prevention and safeguard fish welfare 

      Wright, Daniel William; Stien, Lars Helge; Oppedal, Frode; Sievers, Michael; Ditria, Ellen; Trengereid, Henrik (Research report; Forskningsrapport, 2019)
      A commercial scale sea-cage design, combining skirt and freshwater lens concepts with smart lighting and feeding for improved lice prevention and fish welfare, was trialed. Environment, lice levels and fish welfare were assessed. In addition, acoustic tags and echo sounders were used to track fish behaviour. An associated laboratory trial on brackish water salinity effects on host-attached salmon ...