What conditions are needed for raising Shrimp how to use quicklime in raising Shrimp

In recent years, the demand of crayfish in the market is gradually increasing, and it is more and more favored by consumers as a kind of snack food. Many people see the prospect of lobster culture, and its breeding profit is also very considerable. Although the crayfish is very adaptable to the environment, the aquaculture industry still needs certain culture techniques.

What conditions do you need to raise shrimp?

1. The quality of water quality

It directly affects the healthy growth and development of lobster. In the process of culture, the pH value of pond water is kept between 7.58.5 and the transparency is 30cm-40cm. New water should be added frequently, quicklime solution should be sprinkled regularly, water quality should be regulated, disease occurrence and shelling failure should be prevented.

2. Feed rationally

Lobsters kill each other when they are hungry and lack of food, so feed must be adequate. Lobster feed is animal and plant feed. Plant feed for wheat, water plants, rapeseed cake, etc., animal feed for miscellaneous fish, meat and animal viscera and so on. Usually, the feeding time, feeding amount and feeding method are determined according to the habit of lobster in the day and night and the density of shrimp in the pond. Otherwise, the cost of feed will be increased and the benefit of breeding will be reduced.

3. Scientific fishing

In the process of lobster culture, under the condition of suitable temperature and sufficient feed, young shrimp can grow to commercial specifications in 60-90 days. The seedlings were released in March and the rotation began around June. The catch was big and small. Because the catch is large and the small is left, the rotation can improve the recapture rate, sell a good price, and achieve the goal of high yield and high efficiency.

How to use quicklime in shrimp culture

1. Application of quicklime in pond cleaning.

Quicklime releases a large amount of heat in contact with water and produces calcium hydroxide, which has strong alkalinity, which makes the pH value of pool water rise sharply, and quickly kills bacteria, parasite eggs, aquatic insects, harmful fish, frog eggs, moss and some aquatic plants to achieve the purpose of eliminating diseases.

2. Dry ponds clear ponds

Generally speaking, dry pond cleaning can be used for ponds with sufficient water sources and convenient drainage and irrigation. First put the pond water dry or leave the water depth 5-10 cm, 50-75 kg of quicklime per mu (such as more silt can appropriately increase the use of quicklime), dig a pit at the bottom of the pond or use containers such as wooden buckets when cleaning the pond, put the quicklime into the water to dissolve, unequal cooling immediately sprinkle evenly to the whole pool around, rake pond mud is better.

3. Clear the pond with water

It is generally suitable for ponds where the water source is not enough and the drainage and irrigation is not very convenient. Clean the pond with water, according to the amount of water, generally use 0.2 kilograms of quicklime per cubic meter of water, usually put quicklime into a barrel or tank and sprinkle it on the edge of the pool immediately after melting in a bucket or tank. The seedlings can not be released until the drug power disappears in 7-8 days.

Stocking preparation of lobster

1. Clear the pond thoroughly: 20-30 days before stocking, drain the pond water, remove too much silt, renovate the ridge of the pond, use 75 kilograms of quicklime per mu or bleach powder, bleach powder and other drugs to thoroughly clean the pond for disinfection.

2. Adequate basic fertilizer: 500-600 kg of rotten livestock and poultry manure per mu to cultivate rotifer, Cladocera and copepod plankton to provide palatable bait for shrimp seedlings.

3. Planting aquatic plants: verticillium verticillata, Rabdosia malayensis, Elodea and other aquatic plants are planted in the culture pond, accounting for 2% of the area of the shrimp pond. At the same time, set up nets, or set up bamboo tubes, plastic tubes, etc., to provide habitat, molting and concealment for crayfish.

Disinfection methods of lobster culture ponds

1. Disinfection with quicklime

In the use of quicklime disinfection before leaving only 5-10 cm of stagnant water, smash quicklime evenly into the pool water to dissolve, the dosage of quicklime is generally 20-40 kg per mu, the second day of using quicklime, stir the bottom of the pool with iron rake, so that lime slurry and silt are fully mixed.

2. Bleach disinfection

Using bleach to disinfect lobster ponds needs to drain water, 0.5-1 kg of bleach with an effective rate of more than 30% per mu, and 1.5-2.5 kg of bleach with a water depth of more than 30% per mu in undrained ponds. When in use, bleach is first put into a wooden basin or iron bucket, diluted with water and sprinkled into the pond. Do not release the disinfected water, stay in the pool, start to enter the water the next day, and reach the required level of feeding.

3. Fire alkali disinfection

Now many lobster farms disinfect ponds generally use fire alkali disinfection, but fire alkali action is not rapid, ineffective to many viruses, corrosive, easy to react with carbon dioxide and fail.

This is the end of the crayfish culture technology. I hope it will be helpful to everyone. Crayfish are very adaptable to the environment, so those who have ideas and experience can consider it more, especially if they can realize the advantages of two-way farming with rice fields.