CATDOLL : CATDOLL: What are the symptoms of bacterial infection in farmed snails?

1. What are the symptoms of bacterial infection in farmed snails?

Symptoms of bacterial and viral diseases of field snails: diffuse or punctate congestion on the surface of the snail; circular marks on the epidermis

Treatment of bacterial and viral diseases of field snails (1) Maintaining a good breeding ecological environment is the fundamental way to prevent the occurrence of such diseases. At the same time, when the disease occurs, fully improving the deteriorating breeding environment has an excellent therapeutic effect (2) Use "Shuangyi" No. 3 and "Shuangyi" No. 2 drugs once every 10 days, and "Long" No. 3 each time for 3 consecutive days to achieve a positive preventive effect.

2. How difficult is salmon farming?

Very difficult

The difficulty of salmon farming lies in the living environment. The world's largest wild salmon population is active in the Nordic region, and Norway is the world's largest Atlantic salmon farming country. The salmon imported into our country comes from Norway, Chile and other countries in Northern Europe.

There are 530,000 wild salmon and 400 million farmed salmon here. The quality of farmed salmon is far inferior to that of wild salmon. Wild salmon are caught from fish and shrimp to obtain protein and astaxanthin, while farmed salmon are fed a mixture of soybean plant protein and chemically synthesized astaxanthin feed, which leads to worrying sanitary conditions.

3. What are the conditions for salmon farming?

Farming salmon requires choosing an environment with good drainage methods, open terrain, and sunny and ventilated environment. At the same time, the breeding density needs to be controlled at six kilograms per cubic meter to prevent the salmon from competing for food and growing poorly. During the breeding process, the salmon need to be fed three times a day with granulated feed to make them grow fatter and stronger.

4. What is the cost of salmon farming?

The cost per mu is about 50,000 yuan.

The quality of water in the salmon farming area should be monitored by observing the transparency of the water and whether the water is polluted. The oxygen content in the water should also be checked to see whether it is suitable for salmon growth. Once the oxygen content in the water in the farming area decreases, the growth rate of the salmon will be restricted.

5. What is the salmon farming process?

1. Site selection

The breeding environment of salmon has very high requirements. It must be bred in freshwater areas and there must be no pollution sources around, so as to reduce the occurrence of diseases.

2. Release of fish fry

The specifications of the fry released are consistent. In the early stage of salmon farming, the size and weight of the salmon must be kept at the same level. If the salmon is too small, it will be bullied by the larger salmon. If the salmon is too large, its life cannot be better controlled during the farming process.

3. Site size

The breeding area is too small and not suitable for the normal growth of salmon. A large breeding area can increase the growth rate of salmon and increase its production.

4. Food selection

Salmon like to eat some sardines, soft clams and other foods, but there is no specific food for artificially raised salmon. You can buy some professionally farmed salmon feed on the market and feed it a mixed diet. The amount of feeding should also be based on the growth condition of the salmon and its usual eating conditions.

6. Salmon farming cycle?

It usually takes about 2 years for farmed salmon to mature from seedlings to market. Salmon, also known as northern trout, king salmon, hunchback salmon, salmon, mackerel, etc., is a cold-water highly migratory fish belonging to the class of ray-finned fish, order of salmoniformes, family of salmon, genus of salmon, species of salmon, and is known as the "King of the Ice Sea" in the international food industry.

The edible value of salmon is very high. Now as people's lives are getting better and better, the demand for salmon is also increasing. Therefore, expanding the breeding area and increasing the output of salmon will be an inevitable trend. Salmon is mainly used to make sashimi. Now people have higher requirements for food. It must be palatable and delicious, and its nutritional value cannot be ignored, so salmon is naturally favored by many people. Moreover, the breeding area of ​​salmon is not very large now, so its breeding prospects are still very good.

7. What is the cost of domestically farmed salmon?

The cost per mu is about 50,000 yuan.

The quality of water in the salmon farming area should be monitored by observing the transparency of the water and whether the water is polluted. The oxygen content in the water should also be checked to see whether it is suitable for salmon growth. Once the oxygen content in the water in the farming area decreases, the growth rate of the salmon will be restricted.

8. What are the water quality conditions for salmon farming?

In salmon farming, water temperature is crucial to the survival of salmon. The most suitable water temperature for its growth is 12 to 15 degrees. If you use well water, it is recommended to control the water temperature at around 8 degrees. It is best to add a thermometer in the pond to observe the changes in water temperature at any time. If the temperature is too high or too low, some adjustment measures should be taken. Salmon originally lived in the sea, so we need to keep the water quality in a relatively clean state when farming.

9. How much salmon is farmed in my country?

, China's salmon consumption will reach 240,000 tons in 2025, equivalent to 10% of the current global production. The possibility of this prediction being realized is extremely low, but the probability of achieving 200,000 tons in 2025 is very high.

Due to the booming salmon consumption market, the domestic salmon farming industry has also developed rapidly. In 2019, the output of rainbow trout reached 33,000 tons, of which about 25,000 tons were large-sized rainbow trout. It is expected that by 2025, the domestic salmon farming volume will reach 100,000 tons.

10. Dalian salmon breeding base?

Dalian salmon comes from the ocean, and some are also farmed.

Dalian is located at the southernmost tip of the Northeast region, at the southern part of the Liaodong Peninsula and at the junction of the Yellow Sea and the Bohai Sea. It is across the sea from the Shandong Peninsula and is an important port, industrial and tourist city in China.

Farmed salmon and Norwegian salmon contain minerals and trace elements that play an important role in various physiological functions of the human body.