CATDOLL : CATDOLL: What to feed silver carp to make it grow faster, and the breeding technology of silver carp

What to feed silver carp to make it grow faster, and the breeding technology of silver carp

Silver carp grow faster when fed with some zooplankton and artificial micro-particle compound feed. When breeding silver carp, be sure to treat the breeding pond with fertilizer. After being domesticated, silver carp usually feed on the surface of the water body, with its head above the water, swimming slowly around the feeding area and actively eating compound feed. The feed should have good floating properties in the water. Be sure to avoid waste when feeding, feed in small amounts and multiple times, and feed slowly each time.

1. What to feed silver carp to make it grow faster

1. If you want silver carp to grow fast, you can feed them some zooplankton (such as insects, cladocerans, copepods, etc.) and artificial micro-particle compound feed. When breeding silver carp, the breeding pond must be fertilized, which can promote the growth of plankton and algae in the water, provide a food source for silver carp, accelerate growth, and increase dissolved oxygen in the water to improve water quality.

2. After being domesticated, silver carp usually feed on the surface of the water. When feeding, their heads will be exposed to the water surface, and then they will slowly swim around the feeding area and actively eat compound feed. Therefore, the feed must have a certain degree of buoyancy in the water. Generally, the particle size of granular feed is about 0.3-0.8mm. At present, the commercial feed on the market is mainly Wangli powder feed. The utilization rate of feed with strong buoyancy can reach about 90%.

3. Avoid waste when feeding. If you spread it directly by hand, you must follow the principle of feeding in small amounts and multiple times, and the speed of feeding each time should also be slow. In cage farming, you can usually put the feed in a bag to train the fish to touch the bag, so that they can get enough food according to their needs. When feeding in the reservoir area, you must choose a place that is upwind, quiet, and with appropriate water depth. You can sprinkle the powder in the center of the basket for feeding. If necessary, you can also add water to the powder and sprinkle it, but pay attention to mixing the water evenly.

2. Breeding technology of silver carp

1. Selection of broodstock: broodstock must be selected from natural original species, healthy species with well-developed gonads. When mixed breeding, the individual weight of silver carp should be above 6 kg, bighead carp should be above 10 kg, black carp should be above 15 kg, and grass carp should be above 8 kg. The annual renewal rate of broodstock should be about 10%.

2. Clean the fish pond: The broodstock pond must be easy to irrigate and drain. The bottom of the silver carp and bighead carp pond should have 20cm deep silt, while the bottom of the silver carp and grass carp pond should contain little or no silt. The fish pond area is 1-5 mu, the water depth is about 1.5 meters, and the pond must be cleaned before stocking.

3. Combination stocking: The male-female ratio of silver carp, bighead carp, silver carp and grass carp broodstock should be 1:1-1.5. 8-10 mandarin carp and 150 bighead carp can also be stocked per acre. This can control the growth of wild fish and large floating animals.

4. Feeding and management: Before stocking, 500-700 kg of decomposed organic fertilizer per mu should be put into the silver carp and bighead carp broodstock pond to cultivate plankton, and appropriate fertilization should be carried out later. In warm weather, bean cake slurry can be fed to promote gonad development.

5. Early induction of labor: When the abdomen of the female fish is swollen and the genital opening is relaxed, induction of labor can be performed. Generally, 1000 international units of chorionic gonadotropin or 40-50 micrograms of LRH-A can be injected into the female fish per kilogram of body weight. The dose used for male fish can be halved.

6. Hatching management: Use a filter to prevent floating objects and wild fish from entering the pond during hatching. Clean the hatching tank and hatching tank before each hatching. Provide appropriate water flow during the hatching period, and frequently turn over the water to check for accumulated eggs and fry to maintain water quality.

Generally, it takes about two years to artificially breed silver carp. What needs to be done in the first year?

Artificial breeding of silver carp usually takes 2 years to operate, with fish breeding in the first year and adult fish breeding in the second year. Before returning to the pond to stock fry, the pond should be disinfected and basal fertilizer should be sprinkled. Summer flowers bloom in May and June. Generally, the collection method is adopted to save water for breeding and promote the development of fish. The feed should adhere to the fixed principle to ensure sufficient plankton in the water. Daily management, when the temperature is below 10℃, and the fish pond will safely overwinter.

Generally, it takes about two years to artificially breed silver carp. The first year is mainly used for fish seed breeding. By the end of the year, the size of the fry can basically reach about 3-5 liang. The second year is used for adult fish breeding, and the general weight can reach about 4-6 jin. If there is enough bait, the size of the fish can reach 500-800 grams, and the weight of a three-year-old fish can reach 6-8 jin. The weight of silver carp cultivated in natural waters can even reach 60-80 jin.

Silver carp mainly feed on plankton in the water, so it requires rich water quality to ensure sufficient plankton in the water. The pond should be fertilized before releasing the fish. Green manure and mature manure should be sprinkled in the pond after the summer flowers are netted. During the breeding process, new water should be added to the pond regularly to ensure that the water color is brown-green. When it comes to early winter, when the water temperature is below 10℃, the fish will stop eating. At this time, they should live in the fish pond slag and be concentrated in deep water ponds for wintering. The fish in and out of the fish pond will stop feeding a week in advance. It is best to choose to scoop up the fish pond on a sunny day. Be careful when operating the net cage to avoid danger to the fish, so that they will be infected with water mold during the winter, causing unnecessary losses.

Generally, the water depth of the water storage tank should be controlled at more than 2 meters. It should be backed by the sun and have less silt at the bottom of the pool. After the fish arrive at the water storage tank, it is necessary to prevent ice from forming, which will cause insufficient oxygen in the water and affect the development of the fish, and to prevent water birds from causing danger to the fish. In order to reduce the waste rate of feed, the principles of timing, fixed point, fixed quality and fixed quantity should be adhered to. Observe the water color and fish conditions in the pool every day, cut off weeds and sour impurities in the water in real time to ensure water quality, clean and disinfect the feed table regularly, and ensure that the feed is fresh and hygienic. Set up anti-escape, anti-theft and anti-enemy measures in the pool, strengthen disease prevention on a daily basis, regularly check the development of the fish net, and reasonably adjust the feeding of bait.

Generally, it takes about two years to artificially breed silver carp. The first year is for breeding fish, and the second year is for breeding adult fish. The first year is mainly used for fish seed cultivation. The fish pond should be disinfected and the water should be changed regularly. Attention should be paid to the hygiene of the fish pond. The water color of the fish pond should be observed, the weeds in the fish pond should be cut to ensure the water quality, and attention should be paid to feeding. Anti-escape and anti-theft measures should be set up in the fish pond, and the fish nets should be checked regularly.

To select high-quality fish fry, you must pay attention to the size of the fry. The size of the fry should reach about 4 taels. You must also pay attention to the breeding density. You can choose to induce labor by adding some drugs in the fish pond. Then, ensure the fluidity of the water to ensure that the eggs can hatch normally.

In the first year, you need to choose suitable fish species, strengthen breeding and planting, the specifications of the fry must meet the corresponding standards, and then choose high-quality feed for feeding. You should also pay attention to the breeding density and replace water resources. It is believed that the weight of the fry in the first year is about 3 to 5 taels.

For fish farming this year, the ponds need to be disinfected regularly, coarse fiber feed needs to be added regularly, debris in the water needs to be removed regularly, and measures need to be set up in the ponds to prevent fish from being stolen and escaped, and feed should be adjusted reasonably.