Baseline Risk Study of Potential Chemical Contaminants in Ontario
Farm-Raised Rainbow Trout

In 2001, the Ontario aquaculture industry produced approximately 4500 tonnes of farmed fish with a farm-gate value in excess of $16 million and an economic contribution of $65 million. Currently rainbow trout accounts for over 90% of the production output from Ontario aquaculture, and represents more than two thirds of Canada's farmed trout production. In addition to trout, there are small-scale food fish cultures in Ontario of perch, walleye, sturgeon, Arctic charr, and tilapia.

Objective

There are many healthy benefits of eating fish rich in omega-3 fatty acids including benefits related to coronary heart disease, hypertension, cardiac arrhyrthmia, diabetes, rheumatoid arthritis; development of brain, nervous system, photoreception, and reproductive system; clinical depression and certain cancers.

The study will provide indicators of potential risk that could be introduced into aquaculture-raised product through veterinary therapeutics, contaminated fish oil-rich diets and the environment. The testing is part of OMAFA's ongoing review and development of a comprehensive food safety program.

Expected Benefits

The data from these studies will be used to assess and manage the risks associated with particular fish products, and to develop programming, including regulatory and non-regulatory options.

Summary of Research Results

The results indicate that levels of all chemicals tested in market-ready Ontario farmed rainbow trout are below the Health Canada Maximum Residue Limits.

For inquiries about this study contact:
Gavin Downing
Manager, Food Safety Science Unit
Food Inspection Branch
Local: 519-826-6635
Fax: 519-826-4375
Toll Free: 1-888-466-2372 extension 66635
Email: gavin.downing@ontario.ca