The Centre for Aquaculture Progress (CAP) is providing Operational Welfare Indicator (OWI) protocols for Rainbow Trout (Oncorhynchus mykiss) for different production system and life stages. 

CAP OWI protocols include a comprehensive set of indicators to be compatible with all major aquaculture certifications. The indicators follow a standardized scoring system with levels 0/1/2/3. 

Each indicator has been developed through a comprehensive literature review of all available scientific evidence for the species given. The resulting protocol is developed with feedback and input from scientists, certifiers, farm practitioners and veterinarians.