Why farmed salmon

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Health Conditions Discover Plan Connect. Nutrition Evidence Based Wild vs. Wild-caught salmon vs. Differences in nutritional value. Polyunsaturated fat content. Contaminants in farmed salmon. Mercury and other trace metals. Antibiotics in farmed salmon.

Is wild salmon worth the extra cost? The bottom line. Read this next. Can You Eat Salmon Skin? Medically reviewed by Natalie Butler, R. Understanding Mercury Poisoning. Mr Black says parasite numbers can increase "very quickly" in certain environmental conditions. The Scottish Salmon Company says the problems were "unprecedented and extremely challenging".

It says the fish were "treated swiftly" and has since recorded an "improvement in survival rates". David Ainsley runs a tour company, taking tourists on his boat to experience the beauty of the Argyll coast. He is also a marine biologist and a diver and over the past eight years he has filmed the seabed next to a fish farm in Loch Shuna. He says: "We found large areas of bacterial mat, we found lots of dead things on the seabed.

In fact, there's very little left alive. Campaigners claim the feed, faeces and chemicals from salmon farms fall through the nets, killing the marine life underneath. Mr Ainsley filmed footage under Loch Shuna just weeks ago. He says: "The problem is that we're changing the ecology of these inshore sea lochs. Mr Ainsley thinks the government is failing to regulate the industry properly. He says: "We've had a history of weak regulation of salmon farming - a history where the sensible distances between farms have been reduced, where farms are allowed to pollute much greater areas.

Marine Scotland's Graham Black said: "We would accept that the regulatory structure is not as good as it might be. It probably needs now to be renewed and refreshed and put in place for a more modern approach. Currently, 56 farms are rated by Sepa as "very poor", "poor" or "at risk".

Yet in the past five years no company has been fined or prosecuted. Reasons for the poor ratings include excessive levels of ammonia being released into the sea and unregulated quantities of fish food and faeces discovered on the sea bed.

Sepa says it is getting tougher and they do take action when companies breach weight or chemical levels. Sepa's Terry A'Hearn said: "There's been 44 times in the last five years where we've directed companies to reduce the number of fish they have in their farms. And it's really important, because that leads to a reduction in the waste that actually hits the seabed.

Norway is the biggest producer of farmed salmon in the world, with more than one million tonnes produced each year. Norwegian companies own many of Scotland's salmon farms but they operate under tighter rules in their own country. If there is any evidence that salmon farms are damaging the environment, or adversely affecting wild salmon, they can be fined.

Dr Torbjorn Forseth leads the scientific committee that advises the government on regulating the salmon industry. He says: "I think the science that we have produced and the documentation that has been produced on the effects has actually helped the farming industry because I think also the farming industry needs regulation to operate properly.

He has years of salmon farming experience around the globe, including in Scotland. How does he see Scotland and Norway as being different in the way they do salmon farming? Mr Torgnes says: "The authorities control us in a stronger way than they do in Scotland. His facility is testing new ways of controlling parasites and the damage they do - research which is incentivised by the government in Norway. The authorities here have encouraged producers to develop semi-closed and closed farms by offering cheaper licences for new technologies.

Mr Torgnes says his nets have a tarpaulin system that goes all the way around, to a depth of 12 metres. That means the contents of the closed pens are isolated from the outside waters.

Dr Forseth says: "The winners in this industry will be those that are able to implement new technology that gets rid of the large environmental issues.

The salmon farming industry has insisted it is working hard to find solutions to the problem of sea lice, and is making progress in rearing so-called cleaner fish which feed off the lice, avoiding the need for chemicals.

Whether we would simply pick up a regime from another country and try and plonk it on Scotland, that's not likely to work. New rules will be published by the environmental regulator Sepa in the coming weeks. They are expected to draw upon the example of Norway and promise a tougher stance on companies that do not play by the rules.

Sea lice blamed for salmon shortfall. Wild salmon stocks 'at lowest ever level'. Stricter rules could close salmon farms. Fish farms fail on environmental standards. Fish farms blamed for wild salmon deaths. This video can not be played To play this video you need to enable JavaScript in your browser.

David Ainsley takes tourists on his boat to visit the beauty of the west coast of Scotland. Salmon is known for nutrients: B vitamins , potassium, and high-quality protein can all be found in the fish. It also exists with other trendy foods like avocado and coconut oil in the "healthy fat" category.

What are petrochemicals? They're an additive that gives farmed salmon its pink color. Without it, they would be grey due to a lack of antioxidants in farm waters.

When you buy farmed salmon, simply remove the skin. Most of the toxic chemicals he references can be found there. Not to be alarmist, but there are some human cancer risks associated with eating farmed salmon. According to Dr. Byakodi, these dangers come from the concentrations of PCBs, toxaphene, and dieldrin, which are much higher in farm-raised salmon than in wild Pacific salmon. Polychlorinated biphenyls cause cancer in humans and several other dangerous diseases because they are not biodegradable.

What about wild salmon in a can? The farming process?