What are the requirements of culture conditions for grouper?

Grouper is an important economic species of coastal culture in the South China Sea. The South China Sea is surrounded by the sea, and its geographical location has a unique advantage of marine resources, which provides a rich resource guarantee for the development of mariculture. Grouper culture is growing rapidly because of the continued good price and smooth market. What are the culture conditions for grouper?

What are the requirements for the culture conditions of grouper?

1. Attention must be paid to the requirements on the spot

Now artificial breeding grouper, it can not be casually put in the sea. Therefore, there is a method of cage culture, the use of marine natural resources, and then marine culture and cage culture, this practice is very simple, but also save a lot of profits. Of course, we must pay attention to the grouper in winter is a very troublesome thing, so we must control the water temperature in winter. Of course, there is also a case of culture, that is, pond fish, if you have a pond to raise grouper, it is very important to simulate the marine environment, otherwise the grouper may not adapt to this situation.

2. The choice of fry is also very important.

When choosing fish fry, we must be careful when observing. First of all, we must choose dynamic fish fry, so as not to cause too much damage to the surface of fish fry. Such fry is the most appropriate. In addition, when choosing fish fry, do not choose too large fish fry, although it will grow very large in the future, it is likely to damage the normal development of other fish. In the process of selecting fish fry, the size of all fish fry should be the same, and the control will become very simple.

Different classification treatments should also be carried out according to the different growth cycles of fish.

3. Disinfection must be done well

This is the premise of fish culture, and then before releasing the fish, you must do a good job of disinfection. If traditional fish are disinfected one month in advance, grouper needs to be sterilized two months in advance. Sprinkle lime in the pool and let it dry for about a week. And expose the whole pond to the sun.

After disinfection, organic fertilizer needs to be added to the water body to ensure the growth of plankton, and when the grouper is put into the pond, the whole pond becomes an organic space. There is no lack of compactness, the whole process looks simple, but it must be hands-on.

4. Density requirement

This is an old topic. For ordinary fish, you can raise 1500 yuan an acre, but for grouper, because of its size, the pond of 1500 acres seems a little too much, as much as 1500 yuan. Then watch its growth cycle until it rises to a certain extent, and then play it back. Slowly cycle down, the entire pond ecosystem will also become complete.

5. Attention must be paid to the problem of water temperature

Especially in raising grouper, the water temperature must be controlled, and the water temperature must be above 28 degrees in the seedling stage to ensure the survival rate of grouper in the seedling stage. It is worth noting that the survival rate of grouper is very low. For adult grouper, the water temperature should be higher than 33 degrees. This helps grouper to enhance their adaptability. No less than 25 degrees, especially in winter, grouper is likely to freeze to death, which is very likely to happen in many novice farmers, that is, the water temperature is out of control. Therefore, the death of grouper must be paid attention to.

Second, what are the reasons for the blackbody of grouper?

Among the diseases of grouper, the most harmful virus disease is nerve necrosis virus disease (commonly known as "blackbody"), especially to seedlings. Grouper often shows symptoms such as "blackbody", lying down, "bleaching", white stool, green stool and liver atrophy, which can cause strong pathogenicity when the water temperature is 25-30 ℃, which will destroy the nervous system of grouper and reduce the disease resistance of the fish. Causing diseases caused by bacteria and parasites, seriously directly causing a large number of deaths of grouper, bringing huge losses to farmers. Among them, the smaller the grouper is, the greater the harm is, and the higher the mortality rate is. Once the outbreak occurs, it will often cause large-scale death of fish fry.