There are five key points in raising crayfish well.

When temperatures rise steadily in the spring, crayfish farmers need to step up their patrolling of the ponds. When the water temperature reaches more than 10 ℃, the crayfish will climb out of the cave to find food. At this time is the critical period of crayfish farming, the editor sorted out five key points, grasp these five key points to let you safely through the critical period of breeding.

Add water and fertilize

Adding the water level of the pond at one time is enough to stimulate the crayfish to come out of the hole so that they can eat and grow early; at the same time, all the overwintering crayfish come out of the hole together, which is conducive to the neat size of the breeding lobster.

After adding water, fermented chicken manure, pig manure, cow manure and other organic fertilizers were applied to cultivate rich plankton to feed shrimp seedlings. In the future, according to the specific situation of the fat and thin water quality of the pond, organic fertilizer was applied once a month to ensure the stability of the pond water quality and maintain a high density of plankton in the water.

Feed as early as possible

Crayfish are omnivorous animals, and both plant and animal baits can be put successfully, while the physique of overwintering crayfish is relatively weak and needs a lot of food and nutrition to fatten and grow. therefore, after eating, crayfish should be fed with some animal bait, such as fresh mixed fish, snails, etc., which can not only improve the fullness and survival rate of parent shrimp, but also benefit the need of parent shrimp to reproduce young shrimp. Of course, the best feeding effect can be achieved by putting animal feed with some plant bait at the same time. At this time, it should be noted that the water temperature is still relatively low and crayfish eat relatively little. We must pay attention to the feeding amount, because the number of shrimp in the pond is difficult to estimate, so we should feed according to the weather conditions, follow the principle of more feeding in sunny days and less feeding in rainy days. It is appropriate to control the feeding amount in 2 hours, once in the morning and once in the evening.

Snails were released in the middle and last ten days of March, with 100kg ~ 200kg per mu, so as to produce a batch of snails for young shrimp before and after the Qingming Festival. There should not be too many live snails in early spring, in case too many snails are put in to absorb fertilizer, resulting in thinner water quality in the pond, breeding moss and affecting the growth of crayfish. In the later stage of culture, some snails can be added in June according to specific conditions.

Catch the big and stay the small to reduce the density

Half a month after the start of feeding, crayfish (shrimp with eggs should not be caught) should be caught and sold in order to reduce the density of crayfish. Suggestion: catch in a cage with a larger mesh, otherwise the mesh is too small, it will trap the young shrimp in the cage and affect their normal feeding and growth.

Transplanting aquatic plants

Crayfish are very fond of aquatic sprouts in early spring, so it is necessary to strengthen feed feeding to reduce crayfish's intake of aquatic sprouts and ensure the germination and growth of aquatic plants. For some Tangkou with few water plants, aquatic plants such as bitter grass, water hyacinth and water peanut can be transplanted in the pond in mid-late April, and water peanuts should be affixed along the edge when transplanting.

Many different kinds of aquatic plants should be transplanted in the same pond, and the coverage area of crayfish pond is about 1 / 3 of the pond, in order to ensure that there is no weeding during the whole culture period, and transplant in different places at the edge of the pond, shallow water area and deep water area to meet the needs of lobster feeding, attachment, shelling and evasion.

Daily management

In order to check the crayfish's food intake and activities, the pond should be inspected every morning and evening to see if there are any leaks or holes in the pond, and the problem should be dealt with immediately.