Farm-raised salmon is greener than chicken, beef
By Liza Mayer
By Liza Mayer
Salmon raised in the ocean have the lowest overall cost to the environment, says a research on consumers’ most common protein choices.
The research, prepared for the British Columbia Salmon Farmers Association (BCSFA) by Ottawa based RIAS Inc, looked at the production of salmon versus other major proteins in terms of energy use, greenhouse gas emissions, eutrophication potential, water use and land use.
Results indicate that BC farm-raised salmon is 24 percent less costly to the environment than chicken, while beef has a cost that is 500 percent greater than salmon raised in an ocean environment.
The study used a life-cycle analysis (LCA), defined by the United Nations Environmental Programme as “a tool for the systematic evaluation of the environmental aspects of a product or service system through all stages of its life cycle.”
“Health professionals agree that salmon is by far the most healthy protein choice for people to eat, this study shows it’s also the most healthy protein for our planet,” said Jeremy Dunn, BC Salmon Farmers Association Executive Director. “With world population estimated by the United Nations to grow by over two-billion by 2050, governments must consider the full environmental costs of the food we grow and eat, we have a global food supply and a global environment.”
· BC farm-raised salmon ($0.59/kg) has the lowest overall environmental cost of any of the major protein options available to consumers today.
· Farm-raised salmon is 24 percent less costly to the environment than chicken ($0.73/kg) to almost 500 percent less costly than beef ($3.45/kg).
· GHG Emissions. Farm-raised salmon produce less GHG emissions than any commercially raised food animal.
· Water Use. BC farm-raised salmon was found to have consistently lower water use than other types of animal farming, using only a small fraction of the water compared to other species.
· Energy Use. Over 90 percent of cumulative energy use for farm-raised salmon is from feed production. Overall, the evidence indicates that the life-cycle energy intensity for farm-raised salmon is better than beef.
· Land Use. Overall, studies have found that production of feed for BC farm-raised salmon requires much less land than used in the production of most other species. Over 90 percent of land use for farm-raised salmon is from feed production.
· Eutrophication Potential. Evidence suggests that BC farm-raised salmon has lower potential for eutrophication (defined as the depletion of oxygen in a water body, which kills aquatic animals) than beef.
· Salmon are the most efficient of all commercially raised farm-fed animals in converting feed into a kilogram of body weight, an important metric when assessing the sustainability of a food animal production system. BC farm-raised salmon have an average feed conversion ratio (FCR) of 1.2:1 compared to chicken at 1.7:1 and beef which can be as high as 9.1:1 – close to 10 times less efficient than salmon.
· BCSFA Members produced 75,000 tonnes of salmon in 2015, or about 95 percent of the total provincial harvest of farm-raised salmon.
· BC salmon farmers have 20 social and economic partnerships with coastal First Nations – and are working towards many more. 78 percent of BC’s annual harvest is covered under these agreements.