Crayfish and shrimp seedlings are missing, what may be the problem?

It may be that the number is too small, or it may be that all the crayfish and shrimp fry are hidden, or it may be that the temperature is not suitable.

It is necessary to pay attention to the regulation of water quality, but also to the timely removal of garbage, to prevent pests and diseases in advance, and to pay attention to the entire breeding environment.

The amount of shrimp is too small, the water quality is not adjusted, and there is a process for the growth of crayfish and shrimp seedlings, especially early seedlings, which need to go through the test of severe winter and warm and cold spring, and the water quality factor is particularly important during these growth periods. Aquatic plants are full of ponds, because winter and spring are the home of Eloza, Eloza grows into a vertical and horizontal cross structure, when the pond is closed, there is basically no shrimp road, which seriously encroaches on the space of crayfish, therefore, crayfish are susceptible to environmental stress to death.

Dear, hello: when the crayfish seedlings were put into the run, they ran a little far away and died may be due to the following reasons: at present, many crayfish farmers are in contact with crayfish farming for the first time, some do not understand the seedling stocking and process, and the water environment of some breeding ponds does not meet the stocking requirements, so they directly carry out the seed stocking, which eventually leads to the seedling difficulty in adapting to the water environment pollution and the extremely high mortality rate.

At present, many blind farmers in the hand state are still stuck in the crayfish good breeding, no need to manage or feed the thinking, when the seedlings are put in, if you ignore it, let it grow, and do not inspect it daily, it is easy to make a large number of crayfish seedlings die in the air, and eventually the breeding fails. Thank you for your consultation, I hope this service can help you, you can click on my avatar to follow me, and if you have any questions in the future, you can consult me again, and finally wish you a happy life! <>

Summary. Hello dear, happy to answer your <>

The reproduction of crayfish is affected by a variety of factors, which may be due to the following reasons for poor reproduction:1Pond Environmental Issues:

Poor water quality, water temperature that is too high or too low, lack of oxygen, etc., can affect the reproduction of crayfish. 2.Insufficient number of female shrimp:

If the number of female shrimp is not enough, the mating opportunities are limited, and the number of reproduction will be limited. 3.Diseases and Parasites:

The presence of diseases and parasites can lead to a decrease in the survival rate of crayfish, which can affect reproduction. 4.Improper feeding:

Improper feed mix or overfeeding can lead to water quality problems and health problems, which in turn can affect reproduction. <>

May I ask why I put crayfish seedlings in April and there are few small shrimp in the pond now, and the breeding is so poor?

Hello dear, happy to answer your <>

The reproduction of crayfish is affected by a variety of factors, which may be due to the following reasons: 1Pond Environmental Issues:

Poor water quality, water temperature that is too high or too low, lack of oxygen, etc., can affect the reproduction of crayfish. 2.Insufficient number of female shrimp:

If the number of female shrimp is not enough, the mating opportunities are limited, and the number of breeding will be limited. 3.Diseases and Parasites:

The presence of diseases and parasites can lead to a decrease in the survival rate of crayfish, which can affect reproduction. 4.Improper feeding:

Improper feed or overfeeding will lead to water quality problems and health problems, which in turn will affect reproduction. <>

Dear, the following is a related expansion, I hope you have a <> to help you

In order to improve the reproductive effect, pond management can be strengthened to maintain good water quality and suitable water temperature. At the same time, it is necessary to pay attention to the balance of the population, regularly check and prevent diseases, and provide suitable feed. <>

So, why do the crayfish fry that have just been put in the pond keep dying? How should farmers avoid it? It is normal for a small number of deaths to occur about a week after throwing seedlings in crayfish farming (the number of deaths per day does not exceed 50 and is decreasing).

Mainly because some seedlings will inevitably be injured during transportation; In addition, when the shrimp fry enter the newly reared pond, the living environment changes, and the crayfish will develop a stress response, resulting in low activity and not eating. But if there are a large number of deaths in a short period of time or sustained deaths, which require farmers to pay close attention, you may have entered the misunderstanding of seedling release. The main reasons are as follows; 1.

improper selection or transportation of seeds; It is recommended that farmers should be cautious when putting shrimp seedlings, do not listen blindly, and do more investigation and research.

The following points need to be achieved: (1) choose a formal way to buy, not greedy for cheap; (2) Choose a regular breeding pond or natural lake for seedlings to raise, and avoid releasing wild seedlings or ponds of unknown origin and diseased ponds; The seedlings (3) were vigorously selected, without limb injuries, and the specifications were relatively consistent; (4) Pay attention to the transportation time and method of crayfish, and follow the principle of nearby procurement. If it cannot be avoided, the lobster dehydration transportation time is less than 4 hours; For long-distance transportation, it should be transported at a low temperature with moisture, but the time should not exceed 8 hours; (5) Shrimp seedlings need to be transported in professional baskets, each basket weight does not exceed 10 kg, and aquatic plants are placed in the basket.

2.Wrong time, method or quantity of seedlings; There are two nodes in the feeding time of crayfish cultured shrimp fry, which is not suitable for feeding a large number of fry in other time periods.

The delivery time of shrimp seedlings to Tanghekou is also exceptional, because the two time periods before 8 am or after 17 pm on sunny days must avoid hot times or rainy days. In order to kill the bacteria of crayfish, reduce the stress response of crayfish, and improve the survival rate of shrimp seedlings, the shrimp seedlings must be disinfected and soaked before releasing shrimp. If the conditions are suitable, it is recommended to sprinkle anti-stress drugs before sowing in the whole pond to reduce the stress response of lobsters into the pond, the number of crayfish seedlings must be appropriate, do not think that the more shrimp seedlings are released, the higher the crayfish production.

Scientific breeding needs to combine the cultivation mode and cultivation conditions. In general, the mixed feeding of crayfish should not exceed 70 kg mu, while the intensive feeding of ponds should not exceed 120 kg mu.

3.If you don't prepare well, you will be in a hurry; When stocking crayfish fry, it is necessary to ensure that the water quality meets the stocking conditions, and the pond should be disinfected, cleaned and obese. Only when the water quality and environment of the pond meet the stocking conditions, can the seedlings be stocked, otherwise it is easy to cause the death of a large number of shrimp seedlings.

The water environment before putting crayfish seedlings should meet the following basic conditions: the pH value is, the ammonia nitrogen content is less than, the nitrite content is less than, the dissolved oxygen is not less than 5mg L, and the content of other harmful substances is 0. If the stocking pond is an old pond, it is necessary to do a good job of dredging, bottom modification and disinfection.

A large number of crayfish fry die after being put into use, which is not only a problem of the fry itself, but must be prepared and must not be sloppy.

This may be due to the fact that the correct method of stocking shrimp fry is not quite correct. When putting crayfish seedlings, put them in the whole pond and sprinkle "VC stress".

The first may be because the crayfish fry are unhealthy and sick. Second, during the transportation process, the crayfish were damaged. The third may be that there is a problem with the timing and method of stocking crayfish fry. The water quality of the fourth pond is not good enough.

It may be that these crayfish are not able to adapt well to the environment in the pond, or their own physical constitution is very poor, or it may be that there is a lack of oxygen in the pond.

It is very likely that the water quality is polluted or the water temperature is not suitable for crayfish production, which will lead to death, and there is always a connection.

It's because of the water quality that these crayfish die as soon as they enter the pond.

It may be because the breeding environment is not suitable for crayfish to survive, so the crayfish will die, and you can try it in a different environment.

<> the shrimp seedlings are too small, only swimming at the bottom of the pond and in the water is difficult for people to see; The pond cleaning work is not in place, and too many wild shrimp, mayflies, yellow eels, etc. will prey on shrimp seedlings; In early spring or with oak and late cultivation, the temperature is relatively cold, the shrimp fingers are afraid of freezing, hide in the deep water area, the water is too clear, the sun is too strong, the shrimp seedlings are afraid of the sun, hide in the deep water area, and it is also the reason why the shrimp seedlings can not be seen.