CATDOLL : CATDOLL: Can salmon be farmed?

Salmon can be farmed.

Farmed salmon lack a natural competitive environment and space for exercise. Their feed is high in fat and protein, so they are generally fat and strong. They can quickly grow to more than 20 kilograms in less than a year. The fish is fat and tender and rich in fat. You can see very obvious white fat lines on the fish meat, and the taste is relatively soft.

Wild salmon is slightly more nutritious than farmed salmon. Experimental tests have found that farmed salmon is also nutritious, with a comprehensive amino acid composition, a high total amount of essential amino acids and a high mass fraction of flavor amino acids, making it a food with high nutritional value.

Notes on eating salmon:

Wild salmon has many parasites, the most common of which is Anisakis, which can easily cause abdominal pain and diarrhea. However, marine parasites cannot survive in the human body for a long time. In comparison, farmed salmon may have fewer parasites. It is worth noting that freshwater farmed rainbow trout is sometimes used for sashimi, but its risk is far greater than that of salmon.

This is because parasites in freshwater fish can survive in the human body, the most common of which is liver fluke. Therefore, freshwater farmed rainbow trout cannot be eaten raw. Anisakis can be killed by freezing. The Shanghai Food and Drug Administration recommends freezing at minus 20 degrees Celsius for more than 24 hours or freezing at minus 35 degrees Celsius for 15 hours, in accordance with foreign standards.

The above content refers to Baidu Encyclopedia - Salmon

Can.

The living environment of wild salmon is very competitive. They have to work hard to survive. They will not mature until three years later. Therefore, they have well-developed muscle tissue, low fat content, and soft and firm meat.

Farmed salmon lack a natural competitive environment and space for exercise. Their feed is high in fat and protein, so they are generally fat and strong. They can grow to more than 20 kilograms in less than a year. The fish is fat and tender, rich in fat. You can see very obvious white fat lines on the fish meat, and the taste is relatively soft. The nutrition of wild salmon is slightly higher than that of farmed salmon.

Experimental tests have found that farmed salmon is also nutritious, with a comprehensive amino acid composition. The total amount of essential amino acids and the mass fraction of flavor amino acids are both quite high. It is a food with high nutritional value.

Additional information:

In 1985, the Minister of Fisheries of Norway led a national team to Japan to promote Norwegian salmon, hoping to use salmon to make sushi. In 1994, Japan used Norwegian salmon for sashimi and sushi. Twenty years ago, the Norwegian Seafood Bureau brought Norwegian salmon to the Chinese market.

Today, after years of efforts by the Norwegian Seafood Authority, Norway's sustainable supply of high-quality salmon has been widely recognized by Chinese consumers, and Norwegian salmon has also been loved by more and more Chinese consumers. Salmon has been on the verge of extinction many times. In the 1940s and 1950s, salmon disappeared from the Thames River, a result of human dam construction and river pollution.

In the past 100 years, uncontrolled fishing by humans has also led to the disappearance of some precious salmon species. With the development of technology, artificial salmon farming has begun all over the world, which not only ensures the number of wild salmon and maintains ecological balance, but also greatly meets human demand for it.

Reference source: Baidu Encyclopedia - Salmon

Yes. The "salmon" we often talk about refers to Atlantic salmon, also known as Norwegian salmon. Most of the Norwegian salmon imported into my country are farmed.

Salmon, also known as salmon or salmon, is a cold-water fish that grows in high-latitude areas such as Canada, Norway, Japan and the United States.

At present, China imports about 20,000 tons of salmon every year, accounting for about 90% of the market supply. Shanghai, Beijing and Guangdong are the main consumer markets, but such a huge market is mainly occupied by foreign countries. The salmon farmed in China are generally small in size, weighing about 1 to 2 catties. If a large amount of salmon is needed to be supplied to the market, the salmon must weigh 4 to 6 catties, which is the best weight, and the color reaches 28 degrees. At present, the Dongjiang Lake salmon in the Dongjiang Lake Reservoir in Hunan Province in China is still fighting for its reputation. The salmon are raised relatively large and have seized a certain market. Such a large market in China still requires more efforts from domestic fish farmers.

Can.

1. Introduction

Salmon, also known as salmon or salmon, is divided into the genus Salmon of the family Salmonidae and the genus Trout of the family Salmonidae. It is one of the more commonly used fish ingredients in Western cuisine. In the consumer markets of different countries, salmon covers different types. Norwegian salmon is mainly Atlantic salmon, Finnish salmon is mainly farmed large-sized red meat rainbow trout, and American salmon is mainly Alaskan salmon. Salmon generally refers to fish of the genus Pacific salmon of the family Salmonidae in the order Salmoniformes. There are many types, such as salmon and humpback salmon produced in Northeast my country.

2. Breeding conditions

Breeding pond structure

The breeding pond adopts a shed cement floor structure, and the roof can be covered with plastic cloth. Each cement pool in the shed has an area of ​​100 square meters and a depth of 1.5 to 2.0 meters. There is a water inlet above the cement pool, a drainage outlet below, and a sewage ditch in the middle of the bottom. 2 Water source: It is best to use underground deep well water. If the iron content in the water is high, a tower aeration iron removal equipment should be equipped. Water quality analysis should be done before using the water source. 3 Inflatable and power generation equipment: a 7-10 kilowatt blower. In addition, prepare another spare.

2. Preparation before stocking

For new cement ponds, soak them in water for 2 months before using them for breeding. Old cement ponds should be disinfected with fungicides 10 days before stocking seedlings before use. Fill the cement pond with water to a depth of 1 meter.

3. Stocking of seedlings

40 to 50 Pacific salmon weighing about 30 to 50 grams are stocked per cubic meter of water. Generally, after 150 to 160 days of feeding, the weight of the salmon can reach 900 to 1,000 grams. The fish can be stocked in April in spring.

4. Feeding

Use pellet feed for acclimatization. The crude protein content of feed is 42-45%, and the feed particle size is 3.0-6.0 mm. When the water temperature is below 8℃, feed twice a day, once at 8:00-9:00 in the morning and once at 4:00-5.00 in the afternoon. When the water temperature is 8-15℃, feed 3 times a day, and feed once at noon. Feed until 80% full each time, that is, until most of the fish swim away.

5. Water temperature control

Since Pacific salmon are cold-water fish, they have strict requirements on water temperature. The best water temperature for their growth is 13-15℃, while the well water temperature is around 8℃. During the breeding period, two methods can be used to control the water temperature. One is to cover the trellis with plastic sheets to increase the temperature of the pool water when the temperature is low in early spring and late autumn. The other is to remove the plastic sheets in the summer when the temperature is high and reduce the temperature of the pool water by increasing the exchange of well water. Through the above two methods, the water temperature is kept at a minimum of 5℃ and a maximum of 15℃, and the water temperature is kept at 13-15℃ in spring and summer.