ASF and the Trials for Land-Based Aquaculture
ASF, in cooperation with the Freshwater Institute, undertook a scientifically monitored grow-out trial of farmed salmon in a closed-containment land-based environment.
All detais of growth, materials costs, health, feed conversion, etc. were measured. With these farmed salmon being far from any source of infection, no antibiotics or pesticides have been needed, a major advantage.
The water and tank system offers many advantages. With 99.8% of the water reused, and 99% of the fish wastes and phosphorus reclaimed, this system had a low footprint in the environment. Along with the pesticide-free production, it produced a superb product.
The system is based on circular tanks with 4,800 litres per minute water recirculation.
The results from the first year's operation has been very successful, which has now led to a three-year program to take this experiment to the next level.
The Shortcomings of Marine Aquaculture
Presently the aquaculture industry in Canada produces 31,000 tonnes of salmon each year in marine grow-out pens that can and do occasionally break, and which have issues related to both parasites (requiring pesticide use) and disease (requiring antibiotic use). In 2012, new operations in Nova Scotia have suffered from ISA disease, requiring slaughter of entire pens, and indeed all salmon in certain cage sites.
See Aquaculture for more on the issues of the present system of fish farming