CATDOLL : CATDOLL: Silver carp farming is very popular. What are the requirements for silver carp farming?

Silver carp farming is very popular. What are the requirements for silver carp farming?

The main purpose of raising silver carp and bighead carp in crayfish fields is to use their characteristics of eating cyanobacteria (a type of phytoplankton, algae) to control the outbreak of cyanobacteria in crayfish fields to a certain extent. Therefore, raising silver carp and bighead carp is mainly to prevent cyanobacteria. The main food of silver carp and bighead carp is plankton in the water, and the breeding cost is relatively low. At the same time, crayfish also feed on plankton in the water, and there is a slight conflict between the two in terms of food. Therefore, closely observing the changes in water quality, fertilizing the water in time, and cultivating enough plankton for the two to feed on can basically solve the problem, and no other special investment is required.

In short, raising silver carp or bighead carp in crayfish fields has both advantages and disadvantages. If you want to increase your income and are not afraid of hard work and trouble, you can raise a certain amount of silver carp or bighead carp. Silver carp is a typical freshwater filter-feeding fish, one of the "four major carps" we often say, and it mainly lives in the upper layer of the water body. It usually feeds on plankton in the water body, so it has no effect on the survival of crayfish. In addition, raising silver carp has the benefit of purifying water bodies.

Since crayfish are raised in rice fields, the circular ditch area in the rice fields is not particularly large, but the plankton in the breeding pond is relatively rich, so it is completely possible to breed silver carp. However, when breeding, you must pay attention to the number of silver carp not being too large, otherwise the silver carp will compete with crayfish for oxygen, which is not good for the main crayfish. It is best to control the breeding volume per acre to less than 30 fish, usually 15-20 fish per acre is best.

Silver carp is a filter-feeding fish that mainly eats algae, rotifers, cladocerans, organic debris, etc. in the pond, and its feeding habits overlap greatly with those of crayfish, especially with shrimp fry. This means that the lobsters have been given a competitor. Also, if there are aquatic plants in the pond, it is difficult to cultivate algae. Now, adding silver carp will make it even more difficult to cultivate algae.

In fact, we have seen that many silver carp farms change water almost all year round, but the yield and quality of silver carp farmed in this way are not very high. Silver carp farming actually also needs water changes, but generally the water is changed every other month or so, and in winter it is generally changed every three months. However, we must pay attention to the oxygen content in the water during breeding, and always have an oxygen supply machine or oxygenator ready. Also, pay attention to the temperature of the water body, appropriately raise the water level in summer, and appropriately lower the water level in winter. Finally, it is necessary to ensure the fertility of the water body. Generally, remember to increase fat after each water change.

1. Clean the breeding pond and then disinfect it.

2. When selecting fish fry, you should choose high-quality fish fry, which have a high survival rate.

3. The stocking density is also a key part. Under normal circumstances, one acre of fish pond can breed 150,000 to 200,000 silver carp.

Clean out the excess silt in the fish pond, sprinkle quicklime for disinfection, and after disinfection, drain the water and hold it for drying. The drying time is generally about ten days. Before stocking, conduct trial breeding and fish fry disinfection in spring, select high-quality silver carp fry, and change the water every month or so.

How many silver carp should be stocked per acre of water? Any suggestions?

How many silver carp should be stocked per acre of water surface? Any suggestions? First of all, it is certain that this issue cannot be simply generalized. Silver carp and bighead carp can not only be used as cage fish species, but also in some larger water bodies, they are often used as the main fish species. As the main species or intercropping species, the stocking density must be different. In addition, there are many factors that affect the stocking density of silver carp in the hall, such as fish species specifications, water quality conditions, water depth, expected market specifications, our feeding and management level, etc. The following list is based on general conditions only, and orange sweat farmers can adjust it according to actual conditions.

There is a summer bloom for silver carp farming, and about 150,000 silver carp can be raised per acre of water. Monoculture is the main method, and polyculture is not recommended. Generally speaking, aquaculture should be divided into ponds (reduced density) for about a month.

After reaching the size of inches, silver carp can enter the large fish breeding stage. The stocking density at this stage is usually 5000-10000 per fish. Mixed breeding can be advocated at this stage. When mixed stocking, the main fish should account for about 60% of the total stocking. This breeding stage is usually a breeding cycle (from stocking to wintering). Explain why there is such a large adjustment space in this stocking density. Give a simple example. If you want to have a larger pond, put as little as possible. If you want to make the size of the pond smaller, please put it more appropriately. Similarly, if our management is a little more extensive, we should reduce it, manage it more carefully, and put it in a more appropriate place.

Silver carp is rarely raised alone in pond farming. It is mainly used as a breeding variety. Generally speaking, silver carp accounts for about 20% of the total production. Of course, the number of stockings should also account for about 20% of the total stocking, mainly large fish. Taking grass carp as an example, traditional culture believes that "three grass carps and one silver carp, three silver carps and one bighead carp". Fish ponds are mainly farmed with grass carp, and generally there are about 600 grass carps per mu. Therefore, according to this calculation, about 200 silver carps can be raised, of course 150 silver carps and 50 bighead carps. However, due to the significant increase in the per mu yield of fish ponds, coupled with a large amount of artificial feed, the water quality of fish ponds has become more fertile, so the stocking of silver carp should be appropriately increased.

Silver carp is the main stocking species, commonly found in large water bodies such as lakes and reservoirs. Generally speaking, large species of silver carp are mainly raised, with a stocking capacity of about 100 to 300. In short, silver carp prefers deep, wide waters with richer water quality, which is also more suitable for the growth and high yield of silver carp.

As the main fish species, one acre of water surface should be stocked with 300-350 silver carp, which is the most appropriate range. Since silver carp and the other four major carps do not live in the same water layer area, they can be mixed with the four major carps to increase the total fish production per unit area and economic benefits. Silver carp mainly feeds on natural plankton, and plankton must be cultivated during the breeding process. Secondly, it is also necessary to feed some fine feed appropriately, such as refined feed such as yellow dregs mealworms, bloodworms, and earthworms. The feed must be diversified. Feeding a single feed may cause malnutrition to the silver carp.

It is recommended to stock 15-20 jin of silver carp per mu of lobster pond, and it is best if the silver carp fry is about 1 jin. There is a reason for this. The silver carp fry is recommended to be about 1 jin, not too small, because if the silver carp is too small, it is easy to be eaten by crayfish. If the size is too large, the breeding cost will be higher, so the size should be appropriate when stocking.

About 300 fish are more suitable. You must pay attention to the water quality and pH value, and also control the temperature of the hemisphere.