Marine Harvest Canada ups the ante
Marine Harvest Canada (MHC) says it is introducing a non-medicinal machine called the Hydrolicer in its anti-sea-lice arsenal.
The latest Hydrolicer model can delouse 350 tonnes of salmon per hour but is gentle on the fish.
“We want to make sure that while the system removes sea lice, it is also delicate to our fish. We won’t accept anything less than a quick and safe process that ensures our fish are kept as stress free as possible,” says Gerry Burry, who leads MHC’s R&D for this particular system.
He explained that the system uses water pressure “to carefully get between the sea louse and the salmon’s skin. Once the sea lice are separated from the salmon, we can capture them for disposal.”
MHC says the new tool will help the company continue to effectively manage sea lice levels on its fish, as well as reach its certification targets that include continued reduction of medicine use.
Another tool that the company is introducing to help it combat sea lice is a “fish spa” — a 75-metre vessel with a 3,000-cubic meter freshwater capacity that can provide a freshwater bath for an entire pen (up to 50,000 fish). Immersion in freshwater is a common practice in the salmon farming industry to improve gill health and to help remove external parasites.
MHC expects the $35-million vessel to arrive in mid-2018.