CATDOLL : CATDOLL: How to keep silver carp alive without dying

1. How to keep silver carp without dying

1. Mixed feeding method: 3 days before the fry are put into the pond, 300 kg of manure is applied per mu of water surface, and natural feeds such as rotifers are cultivated. A few days after the fry are put into the pond, 2 kg of soybean milk or 3 kg of cake powder is applied per mu of water surface every day to supplement the shortage of natural feed. Fertilize once every 3 days thereafter, and 150 kg of decomposed compost is applied per mu of water surface each time. After one week of feeding, if the number of large plankton in the pond water cannot meet the needs, in addition to feeding concentrated feed, some duckweed or tender grass should be added and piled in the shallow water around the pond for some herbivorous fry to eat.

2. Cake powder feeding method: grind bean cake, cotton seed cake, rapeseed cake and peanut cake into dry powder to feed fish. The usage is: sprinkle the dry cake powder evenly on the water surface. The dry powder floats in the pond for a long time and has a high utilization rate. Use 2 kg of dry cake powder per acre of water surface per day and feed 4 times a day.

3. Grass slurry feeding method: Various fresh grasses with low fiber content are beaten into slurry to feed fish, using green grass instead of sperm, which is suitable for breeding silver carp and bighead carp fry, and can reduce costs by about 18%. Sprinkle grass slurry throughout the pond twice a day, 60 kg to 90 kg of grass slurry per mu of water surface per day, or 15 kg to 20 kg of grass slurry per 10,000 fry per day, and sprinkle evenly.

2. What is the approximate survival rate of silver carp through artificial breeding?

First of all, we have to look at the weather and water temperature: I personally think that the critical water temperature for silver carp is 16 degrees Celsius. Below 16 degrees Celsius, bighead carp and bighead carp are in danger of death. The water temperature is between 16 and 18 degrees Celsius, and they are in danger of death. Even if they are lucky enough to survive, they grow very slowly, and then they will become thin and die due to lack of food. The final survival rate is generally not high, and it is not recommended to rush for success. There are two ways to release fry: winter and spring. Winter release means that after the fish pond is fished, the original fish pond is cleaned, repaired and detoxified. After a period of time, the temperature is colder and the fry have entered a fasting period. Released fry can survive the winter safely. The other way is to start releasing fry in March after the spring.

Silver carp grows faster than bighead carp. In natural rivers and lakes, individuals weighing more than 10 kilograms are usually seen. It is suitable for breeding in fertile ponds. The time for releasing fish fry should be planned. The time period for releasing silver carp can be selected in April and October. These two seasons are most helpful for the early growth of silver carp. The number of silver carp released each time should be gradually reduced, and the male-female ratio of turtles should be controlled. The number of silver carp released per acre can be controlled at about 1,000.

Silver carp mainly refers to freshwater bighead carp and bighead carp (also called flower carp). Almost all silver carp are filter feeders of ephemera, among which silver carp mainly filter feeders of algae and other ephemera, and its gill rakers are relatively dense; bighead carp mainly filter feeders of ephemera, and its gill rakers are relatively loose. There are no wild fish for sale in the market now, and if there are, they are some lies. I am telling the truth. In our rural areas, whether it is a large reservoir area or a collective pond, they are all contracted by someone. From large reservoir areas to small ponds, fish are raised. The water is turbid and black, mainly because of the long-term use of flavored feeds to cause water quality corruption.

It is really difficult to judge whether silver carp and carp are artificially farmed or wild. For example, those raised in fish ponds without feeding are considered wild or farmed. There are currently very few silver carp and carp in rivers and they are basically not sold in general vegetable markets.

The survival rate of silver carp through artificial breeding is about 80%, which is still considerable. As long as the breeding is done well, the mortality rate will not be high.

If the artificial breeding method is correct and the breeding environment is suitable, the survival rate is about 70%.

It is relatively easy to raise, and the survival rate is about 90%. However, the density must be controlled well, and some nutritious feed must be fed.

There should be a probability of about 80% in the future. Generally, in an artificial breeding environment, a more favorable environment will be created, making it easier to grow.

3. How long can silver carp be kept at home without dying?

If placed in a pot and allowed to move around, it can generally live for about a week. If there is little space and water, it can only live for a day.

The life span of silver carp is mostly 7 to 8 years, and some can live more than 10 years. In addition, the life span of the same species of fish living in different environments also varies.

The scientific name of silver carp is bighead carp, and its aliases are fathead fish, Baotou fish, bighead carp, black carp, etc. It is one of the four major carps.

IV. How to breed silver carp, bighead carp and grass carp in a reservoir area of ​​50-60 mu?

Do you just want to raise these fish? Where do you get feed for your grass carp? A few dozen acres can raise about 100,000 grass carps. Do you have that much feed? Add 60,000 silver carp and 10,000 bighead carp. This doesn't require much feed, just fertilize the water. It is recommended to rearrange it: silver carp as the main one. About 100,000. Add 20,000 bighead carp, 10,000 carp, 20,000-30,000 grass carp, and 1,000 to 2,000 carps and other ferocious fish. On this basis, you can also add one to three hundred net cages of about 10 square meters for special breeding. If there is enough open space nearby, you can also add some geese. Not only can it increase your income and improve the utilization rate of space, but it can also increase the oxygen content in the water due to the activities of geese in the water, saving a lot of energy.

It depends on whether the pool has drought or flood seasons. If the water surface is 50 to 60 acres, how deep the water is, and whether there is oxygenation equipment.

This is very important. If there is no suggestion of 20 grass carps and 60 silver carps per acre, as the saying goes, one grass can support three silver carps.

If there is an aerator, the density can be greatly increased. Remember that if the density is high, you must pay attention to the water quality. Especially in the summer morning, lack of oxygen can kill all the fish.

I also raise fish at home. The density mentioned above is too high~~~