Can I still eat salmon? What are the prospects for breeding in the future? How do you raise it? Attached nutritional value

In the past two days, as novel coronavirus was detected on the salmon cutting board at Beijing Xinfadi Wholesale Market, salmon immediately became the focus. Can I still eat the salmon? What are the prospects for breeding in the future? How do you raise it? What is the nutritional value?

What are the nutritional values of salmon?

1. Salmon is rich in unsaturated fatty acids, which can effectively reduce blood lipids and cholesterol, prevent and treat cardiovascular disease, and can reduce the risk of death from heart attacks by 1/3 by eating two meals a week. Salmon also contains a substance called astaxanthin, which is a very powerful antioxidant. Its omega-3 fatty acids are essential to the brain, retina and nervous system, which can enhance brain function, prevent senile dementia and prevent vision loss.

two。 Salmon can effectively prevent the occurrence and development of chronic diseases such as diabetes. It has high nutritional value and enjoys the reputation of "treasures in water".

3. The meat is delicious and eggs are good ingredients for caviar.

Can you still eat salmon?

Salmon can still be eaten, but eating raw and cold seafood still needs to be vigilant and cooked at high temperature before eating. Fresh food processing should pay attention to hygiene, wash hands frequently and avoid the risk of cross-contamination.

And salmon, as a lower non-mammal, does not have the ability to transmit the virus to humans.

In addition, Wu Zunyou, chief epidemiologist of the Chinese Center for Disease Control and Prevention, said that the positive result of the salmon virus does not mean much. The virus may come from pollution, such as pollution from other objects, including staff members or infected people speaking in front of the board and spraying droplets during transactions, which may cause board pollution, so it cannot be said that salmon is the source of transmission, and there is no direct evidence in this regard.

What are the prospects for salmon culture in the future?

Salmon is a popular seafood product because of its delicious meat, rich nutrition and rich bioactive substances such as EPA and DHA, so the prospect of culture in the future is still considerable.

Fourth, how to raise salmon?

1. Farmed breed

Salmon is divided into freshwater salmon and marine salmon, but at present, most of the artificial culture in China is freshwater culture, so it is necessary to choose varieties that are suitable for fresh water and have strong disease resistance.

two。 Culture water quality

Salmon is originally a kind of marine fish, the use of fresh water culture must pay attention to the quality of fresh water, must not be farmed in the pond or take water at will, the most suitable water depth is 1-1.5m.

3. Farmed feed

At present, it is best to domesticate and feed the artificially cultured salmon with granular feed, in which the roughage should contain half of the protein, and the feeding times should be determined by the water temperature, which is lower than 8 ℃, once in the morning and once in the afternoon; when the water temperature is 8-15 ℃, it will be full once in the morning, in the evening and once in the evening.

4. Aquaculture water temperature and density

The fry density of farmed salmon is 50 fish / fish. If the density is too dense, the salmon will be nutritionally uneven. Because salmon is a cold water fish, the most suitable water temperature for its growth is between 13 and 15 ℃.

The above is about whether salmon can be eaten and how to raise it. Although there is no problem with eating salmon, it is recommended to heat it at a high temperature before eating it for the sake of safety.

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