CATDOLL : CATDOLL: 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.