Norwegian salmon giant Mowi is the most sustainable protein producer among other global meat, dairy and fish producers, according to the Coller FAIR Protein Index.

Six other salmon producers also made the top 10, including Leroy Seafood and Bakkafrost, who, in addition to Mowi, have the lowest scores across all eight risk factors on the index: greenhouse gases, deforestation and biodiversity, water scarcity, water pollution, antibiotics, animal welfare, working conditions and food safety.

Grieg Seafood, Tassal Group and SalMar are among the medium-risk firms.

The index is primarily used to enable and support investor decision making on the protein sector.

"We hope investors will integrate the data and analysis on the performance of these global listed assets into their stewardship and investment decisions," the report said.