What are the main points of freshwater lobster culture?

Crayfish like the crayfish we eat generally belong to freshwater lobster, especially in summer, which is very popular with consumers, so more and more people breed freshwater lobster in recent years. What are the main points of freshwater lobster culture? Is there a prospect?

What are the main points of freshwater lobster culture?

1. Choose Tangkou

Crayfish culture Tangkou, the area should be moderate, generally in 20 mu ~ 50 mu. The ratio of pond to slope is larger, at 1 ∶ 2.5 to 1 ∶ 3, which is convenient for crayfish to live and reproduce, and at the same time reduce the escape of crayfish. The pond is rich in natural bait organisms and aquatic plants.

2. The water quality should meet the requirements

Freshwater crayfish has strong adaptability, and the pH value of water can survive in the range of 6.10 to 9.33, but the suitable value is 6.5 to 9.0, preferably neutral alkali, in order to facilitate the rapid growth of crayfish. Although freshwater lobster is tolerant to hypoxia, if it is in a state of low dissolved oxygen for a long time, it will affect its growth rate and survival rate. The pollution of water quality by heavy metals, pesticides, herbicides, oil and methane should also be avoided. Micro-running water or regular addition of new water should be adopted in culture to promote growth.

3. Pay attention to stocking density

The main breeding crayfish pond, 30 kg ~ 40 kg per mu, more than 30 g / mu, parent shrimp timely feeding artificial feed, the following April began to use cages, shrimp cage fishing, catch large to stay small, annual yield per mu 200 kg ~ 300 kg. From now on, it will only be harvested every year, and there is no need to plant seeds. It should be noted that fishing should not be overdone, such as overfishing, the yield in the coming year is bound to be greatly reduced, at this time the need for supplementary planting. The mixed culture pond breeds shrimp 10 kg ~ 20 kg per mu, the specification is about 25 g / mu, without feed, mainly with natural bait in the pond and residual bait in the fishing pond. the cage fishing begins in April of the following year, and the yield per mu is generally 50 kg ~ 100 kg.

4. Key points of daily management

Because the freshwater lobster grows fast, the metabolism is exuberant, and the oxygen consumption is large, the water quality of the shrimp pond should always be kept fresh, generally adding 15-20 cm of water per week to make the water quality lively and refreshing, and have enough dissolved oxygen. The bait should be put at a fixed point, at a fixed time and in a fixed quantity, and the types should be diversified as far as possible, and should be fed once every morning and evening, and the bait should be placed on the shallow edge of the pond.

5. Disease control

Compared with other types of lobsters, diseases in freshwater lobsters are relatively rare. However, if the water quality of the paddy field is poor or the feeding and management measures are unreasonable, the possibility of diseases and insect pests will be greatly improved. in order to minimize the incidence of lobster diseases, on the one hand, we should strengthen daily management, on the other hand, we should keep up with the development trend of the times, prevent lobster diseases, and adopt a small number of ways as far as possible in the process of fertilization to improve lobster resistance and protect lobster health.

Second, the prospect of freshwater lobster culture

Lobster is a nutritious food with low fat, low cholesterol and high protein. Due to the decreasing resources of marine lobster, freshwater lobster is increasingly favored by consumers all over the world, and the demand is increasing. The prospect of developing freshwater lobster culture according to local conditions is very broad. At present, the international market needs a large number of freshwater lobster.