CATDOLL : CATDOLL: What are the conditions for abalone farming?

1. What are the conditions for abalone farming?

Abalone is a traditional precious food in China, ranking first among the four major seafoods and listed as the first of the eight delicacies. It is delicious, tender and tasty, and rich in nutrition. It is widely distributed and likes to live in clear water, rich seaweed, and stone caves with smooth water flow. So do you know what the breeding conditions of abalone are? Let's learn about it together.

What are the conditions for breeding abalone?

The most suitable water temperature for abalone growth is 10-20℃. Taking the black abalone, the main abalone species in Fujian, as an example, when the temperature reaches 26-29℃, the growth becomes slow, and it stops growing below 14℃. Therefore, farmers send abalone to the south in winter, and in summer, farmers in the south send abalone to the north to escape the heat. There are many ways to grow abalone, including bottom seeding (also known as natural proliferation), raft cage farming, factory farming and tunnel farming, etc. No matter which farming method is used, it is particularly important to choose fresh water quality.

1. Seaweed is growing and bait is plentiful.

2. The water is clear and flowing, and the seawater specific gravity is stable, remaining above 1.020 throughout the year.

3. The bottom is rocky reefs.

4. The sea area should be free of industrial pollution, with few harmful organisms, and without freezing in winter and drifting ice in spring.

What is the growth environment of abalone?

1. Abalones live in rocky reefs with fast-flowing water and lush seaweed. They like to live in coastal islands or rocky corners protruding from the coast. Abalones often crawl in the cracks or caves of rocky reefs. The depth of their distribution varies with species. For example, the wrinkled abalone in northern my country is generally distributed in water depths of more than ten meters. In winter, they move to deeper waters to avoid the cold, and the depth can reach 30 meters. In spring, they slowly move up, and some can live several meters below the tide line. Small abalone can even be found near the low tide line.

2. Abalone likes to hide during the day and come out at night. Abalone kept in the pond usually stays dormant during the day and slowly moves as soon as it gets dark. They are most active after 10 o'clock and before 3 o'clock in the evening. At that time, their heads and feet are fully stretched, and the tentacles on the cracks of the mantle extend from the shell holes and crawl on the bottom or wall of the pond. They can crawl up to 50 centimeters per minute. Abalone also has the habit of returning to their nests. They often like to live in caves, go out to forage at night, and return to the caves to live when it is almost dawn.

3. Abalone likes to eat brown algae or red algae. For example, the wrinkled abalone likes to eat kelp, young kelp and Sargassum. Abalone raised in a pond can eat dozens of grams of small kelp every day. The amount of food eaten by abalone varies with the season. Generally, they eat more in the season with higher water temperature, and they are not very active in winter and eat less. When people throw kelp into the abalone pond, although the abalone's head shrinks in the shell, it can quickly find the direction of food and crawl towards the kelp with its sensitive sense of smell. When the food is still some distance away from its body, it can extend the two leaves at the front of its lower foot, pull the food to the edge of its mouth in an embracing posture, and extend its disc-shaped snout to lick it with its radula. The kelp they have eaten often leaves large round holes with tooth patterns on the edges.

What is the prospect of abalone farming?

Abalone farming requires high investment, high output, and high-efficiency aquaculture projects, and the farming cycle is long and the technical requirements are high, so the investment risk is high, but its high profit still attracts farming units. Take the tunnel farming of 1 million abalone as an example: 100 million tunnel farming abalone farm. The total investment is about 10 million yuan. Among them, the asset investment is more than 6.5 million yuan, the production cost is more than 3.6 million yuan, and the farming survival rate can reach 90%. The sales price is 400,000 yuan/T, then the sales revenue can reach 13.68 million yuan, and the total profit and tax can reach more than 8.7 million yuan, the sales profit and tax rate is 63.35%, and the investment recovery period is 2.56 years. The use of tunnel farming abalone, if the technical measures are appropriate and the disease prevention and control is effective, its prospects are still broad.

2. Can abalone live in fresh water?

Abalone cannot be raised in fresh water. Once it comes into contact with fresh water, it will die due to blistering after about ten minutes. Therefore, abalone can only be raised in seawater. When you buy fresh abalone, it is best to add ice cubes or store it in the refrigerator. If you don’t eat it in a short time, you can put it on a tray, wrap it with plastic wrap, and store it in the freezer of the refrigerator.

Additional information:

Abalone is rich in nutrients, containing 64g of protein, 2g of fat, and 3g of carbohydrates per 100g of dry product. It is also rich in a variety of physiologically active substances such as EPA, DHA, taurine, superoxide dismutase, etc. It is also rich in metal elements (Ca2+, Mg2+, etc.) that play an important role in maintaining the body's acid-base balance and neuromuscular excitement.

Studies have found that abalone muscle hydrolysate can significantly improve the body's exercise endurance, stress resistance and immune function of mice, and has a significant enhancement effect on learning and memory. The water-extracted supernatant of abalone muscle has a significant anticoagulant effect and has a very significant effect on enhancing the fibrinolytic activity of rabbits, which provides evidence for the blood-activating effect of abalone. It also contains minerals such as calcium, phosphorus, iron and multiple vitamins required by the human body.

Reference source: Baidu Encyclopedia - Abalone

3. How long can you keep abalone after buying it home?

It depends on the situation.

Abalone is a delicate seafood and has a strict living environment. If family conditions do not allow, it cannot be kept at home for a long time. It can only be kept for about 3-5 days, but it also needs to be kept in the refrigerator or in salt water.

If the family situation allows, you can simulate the living environment of abalone. First, seawater is needed. Second, its living temperature range is 1 to 28 degrees Celsius, and an oxygen pump is needed to provide oxygen. Third, abalone eats kelp and algae, so they need to be fed every day so that the abalone can be raised for a long time.

Additional information: Abalone is one of the precious "sea treasures", delicious and nutritious, known as the "soft gold" of the ocean. Abalone is a precious marine edible shellfish, known as "table gold, the crown of sea treasures", with tender meat and rich nutrition.

The edible part of fresh abalone contains 24% protein and 0.44% fat; the dried abalone contains 40% protein, 33.7% glycogen, 0.9% fat, as well as a variety of vitamins and trace elements. It is a high-protein, low-fat food that is very beneficial to the human body. Abalone is rich in glutamic acid and tastes very delicious.

It depends on the situation. Abalones have a very strict living environment. They cannot be raised at home for a long time. They can only be raised for about 3-5 days, but they also need to be kept in a refrigerator or in salt water. If the family situation allows, you can simulate the living environment of abalones. First, you need to use seawater to raise them. Second, their living temperature range is 1-28 degrees Celsius, and they also need oxygen pumps to oxygenate them.