Analyses and recommendations regarding four systems in the PigStun project that provide alternatives to high CO2 stunning : Deliverable D4
2025
Gerritzen, M.
To support the move away from current high CO2 stunning systems, PigStun tested novel approaches andstunning systems along two lines of thinking: The first one looked at different Controlled AtmosphereStunning (CAS) systems and using inert gasses. The second one aims to reduce stress during pre-stunhandling, allowing a calmer entry into the stunner. This applies to the electrical stunning system and indifferent extent to the innovative gas systems.We find that the alternatives tested have the potential to increase animal welfare.It has to be acknowledged that most of the innovative ideas in the project have not yet been developed tocommercial high-throughput scale (except for electrical stunning). For the gas stunning alternatives, nostudies have yet been done at commercial scale to mitigate the reduced capacities that were observed. Forthis, the implementation phase that follows this project will require further scientific monitoring to ensurethat measures for successful commercialisation do not counteract the observed animal welfare benefits.
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