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A unique form of freshwater salmon farming occurs in some hydroelectric canals in New Zealand. A site in Tekapo, fed by fast, cold waters from the Southern Alps, is the highest salmon farm in the world, 677 m (2,221 ft) above sea level. [117] Before they are killed, cage salmon are sometimes anaesthetised with a herbal extract.
Fans of salmon know just how versatile the fish is. Whether you enjoy it best smoked and on a bagel, or broiled with some light seasoning, salmon can spruce up a variety of dishes. In recent years ...
Wild salmon is more nutritionally dense than farm-raised salmon and can contain up to three times less fat, fewer calories, and more vitamins and minerals like iron, potassium, and b-12.
Workers prepare sides of fresh farmed salmon for filleting and packaging in the processing plant at a fish farm operated by Salmar ASA on the island of Froya, Norway, on Thursday, Aug. 7, 2014.
Farm-raised salmon are fed the carotenoids astaxanthin and canthaxanthin to match their flesh colour to wild salmon [93] to improve their marketability. [94] Wild salmon get these carotenoids, primarily astaxanthin, from eating shellfish and krill.
The transfer of parasites from open-net cage salmon farming, especially sea lice, has reduced numbers of wild salmon. The European Commission (2002) concluded, "The reduction of wild salmonid abundance is also linked to other factors but there is more and more scientific evidence establishing a direct link between the number of lice-infested wild fish and the presence of cages in the same ...
1. Farm-Raised Salmon. Some farm-raised salmon may contain more parasites than its wild-caught counterpart due to the densely populated conditions of fish farms, which can foster a breeding ground ...
The amount of organic waste produced by fish farms is also alarming. A salmon farm in Scotland, for instance, is estimated to produce as much organic waste as equivalent to a town of people between 10,000 and 20,000 people each year. [29] Today 50% of the world's seafood is farm-raised. [30]
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