CATDOLL : CATDOLL: 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 at a slower speed 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 powder feed, and 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, black carp and grass carp broodstock should be 1:1-1.5. 8-10 mandarin carp and about 150 bighead carp can also be stocked per acre. This can control the growth of wild fish and large zooplankton.

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.