CATDOLL : CATDOLL: What fertilizer is good for growing silver carp?

1. What fertilizer is good for growing silver carp?

The fertilizer used should have a high organic matter content, preferably an organic fertilizer mainly composed of fermented chicken manure, followed by an amino acid fertilizer with amino acids as the main ingredient.

The ponds mainly applying chemical fertilizers provide fish with an ecological environment with high dissolved oxygen, low oxygen consumption and abundant bait. For ponds mainly raising silver carp, applying chemical fertilizers is a mature experience worth promoting.

It is generally believed that for ponds with rich bottom mud, 10 catties of carbon amine and 5-10 catties of superphosphate should be applied per mu once a week. For thin or newly excavated fish ponds, nitrogen should be appropriately increased.

Note:

① Chemical fertilizer is an inorganic fertilizer that can only promote the massive reproduction and growth of plankton and provide abundant bait organisms for farmed fish. It is not a direct bait for fish. Therefore, not all fish can achieve the effect of increasing production by applying chemical fertilizers, such as raising grass carp. The main targets of fish farming with chemical fertilizers are filter-feeding fish that feed on plankton, especially silver carp.

② Although chemical fertilizers have the characteristics of strong effects and fast fertilizer effects, their effects are not long-lasting. Therefore, it is necessary to adopt the method of applying small amounts and frequently. The amount should not be too large, otherwise it will pollute the water quality, inhibit the growth of phytoplankton, and even cause fish poisoning and death.

③The chemical fertilizers currently used are mainly phosphorus fertilizers and nitrogen fertilizers, but the nutritional components of these two fertilizers are incomplete, so it is best to use them in combination with organic fertilizers.

④ When using chemical fertilizers, do not mix them with alkaline substances such as quicklime, otherwise the fertilizer effect will be reduced.

⑤ Water temperature has a great influence on the effect of fertilizers. The effect is poor at low temperatures. The best effect is achieved when the temperature is around 300°C. Generally, it is advisable to apply fertilizers in the afternoon on sunny days (sprinkle the water all over the pond).

Silver carp mainly feed on plankton in the water by filtering it. The more it eats, the faster it grows. Therefore, the water used to raise silver carp must be fertile.

The fertilizer used should have a high organic matter content. The best is organic fertilizer mainly made of fermented chicken manure, followed by amino acid fertilizer with amino acids as the main ingredient, and the worst is agricultural chemical fertilizer.

Special feed for silver carp! Add human and animal manure to improve fertility!

2. How to raise silver carp

It is caused by water quality problems. Don't change too much tap water. If you don't have the conditions to dry the water overnight, it doesn't matter. You can also add tap water directly. When changing the water, replace one-fourth of the fish tank.

Do not stop using oxygen. Change the water every 3 days. If the fish density is high, change it every 2 days. Add more salt to pressurize the water after each water change. Because I don't know how big your tank is, take a 1.5-meter tank as an example. Add 2 handfuls of salt to increase the resistance of the fish.

In addition, as mentioned in the first post, adding a koi fish can increase their fighting spirit and make them live more energetically and not depressed.

3. How to cook silver carp? The nutritional value of silver carp

How to make silver carp? Nutritional value of silver carp. Silver carp is a typical filter-feeding fish. It mainly eats zooplankton in the fry stage. When it is more than 1.5 cm long, it gradually turns to eating phytoplankton. It also eats soy milk, bean dregs powder, bran and rice bran, etc. It prefers to eat artificial micro-particle compound feed. It is suitable for breeding in fertile water. The length of the intestine is about 6-10 times the body length. The sexual maturity age of silver carp is 1-2 years earlier than that of grass carp. Mature individuals are also smaller, and female fish weighing more than 3 kg can generally reach maturity. The relative egg carrying capacity of female fish weighing about 5 kg is about 40,000 to 50,000 eggs per kilogram of body weight, and the absolute egg carrying capacity is 200,000 to 250,000 eggs. Egg floating. The spawning period is similar to that of grass carp. It can weigh up to 30-40 kg in natural rivers. Under pond conditions, if there is sufficient bait, a one-year-old fish can reach about 0.8 kg. Edit this section Life habits Silver carp is a pelagic fish. In spring, summer and autumn, they spend most of their time swimming in the middle and upper layers of the water for food, and in winter they dive to deep water to hibernate. Silver carp is a typical filter-feeding fish. Main food: Silver carp feeds on plankton throughout its life. In the fry stage, it mainly eats zooplankton and likes to eat grass carp feces and chicken and cow dung. It also eats soy milk, bean dregs powder, bran and rice bran, and prefers artificial micro-granular feed. It is very interested in sour food and has a good appetite for rotten food. Silver carp's food is obviously seasonal. In addition to plankton in spring and autumn, it also eats a lot of detritus bait; the lower the water level in summer, the greater its food intake; it eats less and moves less during the winter. It is suitable for breeding in fertile water. How to cook silver carp and the nutritional value of silver carp

4. What to feed silver carp to make it grow faster? Attached is 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.