CATDOLL : CATDOLL: Some people say that crayfish farming relies on drugs instead of technology. Is this true?

Some people say that crayfish farming relies on drugs instead of technology. Is this true?

This is false. In fact, technology is not very important. It mainly relies on some chemical means.

It is true that the breeding of crayfish does not require any technology.

In fact, it is really like this, because I want to ask about its living environment, which is relatively casual and too good.

I don't think it's true, because if we rely on drugs, our crayfish will not be safe.

I think it should not be true, because if we rely on drugs, our crayfish is not safe. Crayfish farming, preparation before stocking The pond must have good water inlet and drainage facilities. The pond should be surrounded by a 50 cm high escape-proof wall with bamboo strips, mesh, etc. Set up shrimp habitats in the breeding waters, such as rubble, bricks, stones, grass dragons, etc. as nests for shrimps to hide and defend against enemies. Plant water hyacinths, water peanuts, and other aquatic plants around the pond, and their coverage is generally 1/3 of the pond surface, to provide shade for lobsters and breed plankton that lobsters love to eat.

Crayfish farming cannot be sloppy or lazy. If you are sloppy about crayfish farming and he gives you feedback, then the farming will fail or have no benefit. Many people still hold the mentality of crayfish farming, thinking that as long as the seedlings can be released without any operation, they will benefit in the end. I don't care whether to plant aquatic plants, what aquatic plants to plant, whether to feed bait and how to feed bait. I don't pay much attention to cultivation management, and I don't usually go to the pond to see it, etc. Many people still adhere to the principle of "saving as much as possible" and don't invest unless you can. If something goes wrong, they will cram at the last minute. When crayfish are sick, it can only be managed, but it can only fail in the end. Crayfish farming has always been unable to realize that their focus is on prevention and daily management, rather than solving problems once they occur.

At present, there are many technical service shops that raise crayfish, sell breeding drugs, provide technology, etc. However, many farmers still do not trust them and still operate according to their inherent ideas. They think that all these technologies are to cheat money and fool farmers. They always hold a rebellious mentality, only believe or listen to the words of old farmers, and never accept new knowledge.

Although these technical service shops currently have more or less problems, their role in crayfish farming cannot be ignored. They can teach primary crayfish farmers scientific farming methods and concepts. Any shop is backed by a strong manufacturer, which is the most suitable solution for crayfish farming after summarizing many failed farming experiences. For novice breeders, they must believe in science and breeding technology. They can help you avoid detours and reduce breeding risks.

I want to raise lobsters! What skills do I need?

Preparation before stocking: The pond should have good water inlet and drainage facilities. A 50 cm high escape-proof wall should be built around the pond with bamboo strips, mesh, etc. Set up shrimp habitats in the breeding waters, such as installing rubble, bricks, stones, mesh, old tires, straw cages, etc. as shrimp nests for shrimp to hide and defend against enemies. Plant water hyacinth, water peanuts, water lilies, wild rice stems and other aquatic plants around the pond, and their coverage is generally 1/3 of the pond surface, so as to provide shade for lobsters and breed plankton that lobsters love to eat. Generally, new lobster ponds can be cleared with quicklime water, with 100 kg per mu. If old ponds or lakes are used to raise lobsters, silt removal, repair, and exposure should be carried out. 10 to 15 days before stocking shrimp fry, 50 kg of quicklime per mu should be used to dry the pond for disinfection. At the same time, predatory wild pests such as catfish, loach, black fish, snakes, and rats in the pond should be completely eliminated. 10 to 15 days before the shrimp fry are released, 100 to 200 kg of fully decomposed manure such as pig manure is generally applied per mu of water surface to cultivate plankton and provide an appropriate amount of organic debris as shrimp feed. Before the pond is filled with water, a water screen (preferably 60 to 80 mesh) should be installed to prevent water enemies from entering. The depth of the pond water is maintained at 50 cm to 80 cm, and the transparency is between 30 cm and 40 cm.

Stocking of shrimp fry is best done in the morning and evening on sunny days. 6,000 to 8,000 2-cm-long shrimps or 4,000 to 6,000 3-5-cm-long shrimps should be stocked per mu. The specifications of shrimp fry stocked in the same pond should be uniform. At the same time, 300 to 400 silver carps and 200 breams weighing about 50 grams can be stocked in the pond water.

Carefully feed the shrimps within 3 days after the seedlings are released. Feed them with minced small fish and minced meat. After 3 days, feed them with small fish, minced meat or compound feed within 1 month. When the shrimp seedlings grow to 6 cm to 7 cm, they can be fed with crushed snails, river clams and appropriate amounts of plant feed (such as wheat, bran, corn, cakes, etc.) or compound feed. The daily feeding amount is based on eating enough, eating up, and leaving no residual bait. Generally, medium and small crayfish are fed at 15% to 20% of their body weight, and adult shrimps are fed at 5% to 10% of their body weight. The specific amount can be adjusted according to the shrimp's eating situation. Feed twice a day, once in the morning and evening. The amount of feeding at night accounts for 70% to 80% of the daily feeding amount. The bait should be thrown around the pond and appropriately dispersed. More bait should be thrown in places where lobsters are concentrated to facilitate their feeding.

Water quality management: Lobsters grow fast, have a vigorous metabolism, and consume a lot of oxygen, so the water quality of the shrimp pond must be kept fresh. Add 15 cm to 20 cm of water every week to ensure that the water is fresh, clean, and has enough dissolved oxygen. The transparency of the pool water is controlled at a depth of more than 35 cm. When the weather is too hot, the pool water should be deepened appropriately to stabilize the water temperature. Strictly prevent the water quality from industrial pollution, pesticide pollution, and chemical pollution.

Aeration: When the dissolved oxygen in the water is low, the water quality is aging, or there is bad weather such as thunderstorms, hot and humid days, or continuous cloudy days, the amount of feed should be reduced or stopped, and careful observation should be made. If the lobsters are found to be unresponsive, swimming to the shore, floating and crawling onto the shore, it means that there is a serious lack of oxygen, and water should be added in time or an aerator should be turned on to increase oxygen.

In daily management, you should check and patrol the pond frequently, pay attention to the lobsters' foraging, activities, growth and molting, so as to take necessary technical measures in time. Remove moss from the pond in time; check the filter screens at the inlet and outlet frequently to prevent lobsters from escaping or wild fish and other harmful organisms from entering due to damage to the filter screens. Always pay attention to whether there are harmful organisms in the pond, such as water rats, water snakes, water birds, frogs and fish pests, etc. If there are any, they should be removed in time.

To prevent diseases, the shrimp fry must be disinfected before being put into the pond to prevent pathogens from being brought into the pond. The shrimp pond should be disinfected with quicklime regularly, and fresh water should be added frequently to keep the pond water clean and hygienic. Multiple vitamins should be added to the shrimp feed to enhance the shrimp's immunity.

Timely fishing is generally carried out after about 2 months of rearing. When the lobster weighs more than 50 grams, it can be caught and put on the market. Lobsters are caught using shrimp cages, ground traps, and seine nets, catching the big ones and leaving the small ones.

Crayfish like to live in a clean place.

Crayfish are omnivores, mainly eating animals, including small fish, shrimp, plankton, benthic organisms, and algae. According to shrimp farmers, crayfish have a strong reproductive capacity and will ovulate two to three times a year. It usually takes only two months from the hatching of shrimp eggs to the maturity of crayfish.

Crayfish is a lobster-like crustacean that lives in freshwater. The scientific name of crayfish is Procambarus clarkii, also known as red crayfish.

Or freshwater crayfish.

Professor Cai Shengli from the School of Fisheries of Shanghai Fisheries University introduced that crayfish originated in North America. In 1918, Japan introduced crayfish from the United States as bait for bullfrogs. During World War II, crayfish were introduced to my country from Japan. Now, they have become an important resource of freshwater shrimp in my country and are widely distributed in provinces and cities in the middle and lower reaches of the Yangtze River. As an alien species, crayfish has a certain impact on the ecological environment of its habitat and has become one of the invasive alien species with certain hazards (but it has not been included in the first list of invasive alien species in my country).

Carefully feed the shrimps within 3 days after the seedlings are released. Feed them with minced small fish and minced meat. After 3 days, feed them with small fish, minced meat or compound feed within 1 month. When the shrimp seedlings grow to 6 cm to 7 cm, they can be fed with crushed snails, river clams and appropriate amounts of plant feed (such as wheat, bran, corn, cakes, etc.) or compound feed. The daily feeding amount is based on eating enough, eating up, and leaving no residual bait. Generally, medium and small crayfish are fed at 15% to 20% of their body weight, and adult shrimps are fed at 5% to 10% of their body weight. The specific amount can be adjusted according to the shrimp's eating situation. Feed twice a day, once in the morning and evening. The amount of feeding at night accounts for 70% to 80% of the daily feeding amount. The bait should be thrown around the pond and appropriately dispersed. More bait should be thrown in places where lobsters are concentrated to facilitate their feeding.

Full set of technology: Yes, it is necessary