Salmon culture exposed by foreign media


Salmon meat is fresh and tender, and is loved by countless “foodies”. However, the media recently exposed “several evils” in the Norwegian salmon breeding chain, which surprised consumers who like salmon.
In order to find out the cause of the death of more than 50 million cultured salmon in the world in 2018, the reporter of arte conducted a field investigation in Norway, the hometown of salmon, according to a report on the 14th. As a big producer and exporter of salmon, Norway’s annual sales of salmon reach 50 billion euros. In the northern sea area of Norway, there is a huge sea salmon “farm”, each farm has tens of thousands of fish. “I know fish can’t breathe because of crowding, but the sight is more terrible: a large number of fish are crowded in the dirty sea water full of their waste. Many sick salmon are covered with ulcers as large as the palm of the hand, and some have become S-shaped deformed fish. Statistics show that the mortality rate of cultured salmon is as high as 20%. In addition, high-density culture also causes the infestation of ticks.
In addition to the poor breeding conditions, the cultured salmon also threaten the survival of wild salmon. According to skara, a researcher at the Norwegian Institute of Oceanography, there are about 530000 wild salmon in Norway and 400 million farmed salmon. Every year, about 183000 farmed salmon escape from farms and enter the ocean. They not only compete for food with the latter, but also infect the latter. What’s worse, the adaptability and reproduction ability of their offspring are poor, which directly contaminates the gene of wild salmon. In the past 35 years, the number of wild salmon has declined by 50%.
According to the report, people like salmon mainly because of its meat quality and nutrition. Wild salmon eat shrimp and crab in the ocean, which makes them rich in omega-3 fatty acids. Astaxanthin makes salmon meat have a bright color. However, in order to make the cultured salmon grow rapidly, people put in the feed mixed with soybean plant protein and astaxanthin, so the quality of cultured salmon is far lower than that of wild salmon.
Several Norwegian farms have confirmed that the export of salmon to China has been temporarily suspended due to the detection of new coronavirus in the chopping board of imported salmon in Beijing’s Xinfadi market, Reuters reported Friday.