CATDOLL : CATDOLL: How big can a 6cm silver carp fry grow in a year? When are silver carp fry usually released?

How big can a 6cm silver carp fry grow in a year? When are silver carp fry usually released?

1. Silver carp fry can grow to 1.8-1kg in one year, 3-4kg in three years, and wild silver carp can grow to 30-40kg. 2. Silver carp are generally released in February-March in spring and in June-July in summer. 3. Silver carp is similar in appearance to carp, with oily head, tender meat, fresh quality and delicious taste. It feeds on cladocerans and copepods among zooplankton, and also eats a small amount of shrimp and plant residues.

1. How big can a 6cm silver carp fry grow in a year?

1. How big can a 6cm silver carp fry grow in a year?

(1) Generally, silver carp fry can grow to about 1.8-1kg in one year, and can grow to about 3-4kg in three years.

(2) Silver carp grows very fast and can grow rapidly when there is sufficient feed. Wild silver carp can grow to 30-40kg.

2. Characteristics of silver carp

(1) Silver carp has oily head, tender meat, fresh texture and delicious taste. They generally reproduce naturally and are relatively easy to catch.

(2) Silver carp is similar in appearance to carp, but is distinguished from carp by its large head, lack of tentacles, and dense gills. Silver carp feeds mainly on cladocerans and copepods among zooplankton, and also eats a small amount of shrimp and plant debris.

(3) Silver carp is a filter-feeding fish that has a certain cleaning effect on water quality, so it is often raised together with other fish and is called the "water scavenger".

2. When are silver carp fry usually released?

1. Time for stocking silver carp fry

(1) Silver carp fry are generally released in February or March in spring and in June or July in summer.

(2) The time of stocking silver carp fry varies in different regions. In North China, Northeast China and Northwest China, they are generally stocked after thawing, when the water temperature stabilizes at 5-6℃.

2. How to breed silver carp

(1) Preparation

The pond area for silver carp breeding is generally 4-8 mu, and the water depth is generally 1.5-2 meters. Before stocking the fry, organic fertilizers should be applied, and the base fertilizer for silver carp and bighead carp should be applied in appropriate amounts, and the peak period of wheel worms should be controlled.

(2) Stocking fish fry

① Fish fry are usually released in May and June, and the mixed culture method is generally adopted, and a small amount of silver carp, carp, etc. can be mixed.

② At this stage, the habits of fish gradually become different, and their requirements for the external environment are also different. They can be mixed and raised according to the habits of various fish and their adaptability to water quality, providing each fish with a suitable growth environment, fully utilizing the water body and making more economical use of food.

(3) Feeding and management

① At this stage, silver carp and bighead carp mainly feed on plankton, and the plankton in the pond water must reach a certain number.

② Apply base fertilizer before stocking the pond, and apply green manure and mature manure after stocking. Also, add new water regularly to keep the water brown-green.

③ Artificial feeding should be done at a fixed time, location, quality and quantity to improve the utilization rate of bait and reduce the bait coefficient.

(4) Daily management

① Patrol the pond once every morning to observe the water color and the movements of the fish. Regularly remove weeds by the pond and rotten debris in the water, clean the feeding table, and disinfect the table and food.

② Do a good job of checking the net, which is conducive to fertilizing the water, and check the growth of fish and fish diseases, determine the amount of feed and fish disease prevention and control methods.

③Do a good job in preventing escape, theft, fish diseases and pests.

(5) Pooling and wintering

① When the water temperature drops below 10℃ in late autumn and early winter, the fish will no longer eat. At this time, the fish must be caught and concentrated in deeper fish ponds to overwinter.

② Stop feeding one week before merging ponds, and pull the nets out of the ponds on a sunny day. Be careful and meticulous when merging ponds to avoid injuring the fish and causing saprolegniasis during the winter.

③ The water depth of the storage pond is generally more than 2 meters. Choose a pond that is sunny, sheltered from the wind, and has little sludge.

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, such as fish species specifications, water quality conditions, water depth, expected market specifications, our feeding management level, etc. The following list is based on general conditions only, and 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 this stocking density has such a large adjustment space. 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, 300-350 silver carp should be stocked in one acre of water surface, 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 and economic benefits per unit area. 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 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 doing 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 moderate 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.