Salmon farming is moving on land.
The Atlantic Salmon Federation and the Conservation Fund are joining forces in a research project that will try to rear salmon in a freshwater closed-containment system.
“It’s huge, it’s groundbreaking,” Bill Taylor, the federation’s president, said. “Hopefully it will help us move towards much more environmentally friendly and wild-salmon friendly aquaculture.”
Over the next year, the federation plans to grow 10 tonnes of salmon in a circular, stainless-steel tank that is slightly larger than an Olympic swimming pool.
The Conservation Fund, an American non-profit organization, has successfully conducted similar trials with St. John River salmon in smaller qualities, but Taylor said this project is the first trial of this magnitude. Taylor said the project’s budget is $120,000.
Jonathan Carr, the federation’s director of research and environment, said the goal is to provide an environmentally friendly solution to the growing global demand for salmon.
He said there has been concern in recent years about farmed salmon escaping their confines and contaminating wild fish stocks. The on-land, closed-containment system would eliminate this risk, Carr said.
It would also result in a better product for consumers, since pesticides and harsh chemicals would no longer be necessary to raise the fish to maturity. And farmers would be able to charge more for the higher quality, making it cost competitive, Taylor said.
He added that commercial salmon farming is on the brink of maxing out its growth potential. On-land fish farms could be the answer to global demand for salmon, which continues to rise, he said.
But this may be a pipe dream, according to some. Pamela Parker is the executive director for the Atlantic Canada Fish Farmers Association.
“Closed containment is not the magic bullet that some people make it out to be,” she said.
There are significant questions surrounding energy usage and the amount of water that a large-scale operation would use, she said.
Every minute, 5,000 litres of water would pass through the system. However, Taylor said 99.8 per cent of it would be recirculated into the ground, just as clean as when it entered their system.
While Taylor said he couldn’t see closed-containment farms replacing existing fish farm operations, he said it would be great to see in the future. But what may work on a small scale doesn’t always translate to a functional, large-scale operation, Parker said.
To be economically viable, Carr said they would need to grow two to three thousand tonnes. In comparison, Parker said, New Brunswick fish farmers produce a total of 35 thousand metric tonnes of salmon.
To match that output, the tanks would need to cover the space of about 8,000 football fields, Parker said.
“we’re very supportive of new research,” she said, “we’re just not convinced … (this) could be justified.”
The project will be housed in Shepherdstown, West Virginia.
Taylor said, “there’s certainly risk but we think it’s very low.”
Previously published June 24, 2011; Telegraph-Journal