Requirements for culture conditions of grouper

Grouper is a large and medium-sized marine fish, mainly distributed in coastal areas, its tender meat, rich in nutrients, eat like chicken, deeply loved by people, now most of the market are artificially cultured. It still needs certain requirements for artificial breeding conditions. Let's take a look at the breeding conditions of grouper.

1. Requirements for site conditions

At present, there are mainly two kinds of artificial culture grouper: cage culture and pond culture. Of course, it can also be cultured in the natural environment of the ocean. Sea culture is similar to cage culture, but the water temperature should be controlled in winter. Pond culture can be dug in low and medium tide areas or the use of the original shrimp pond for culture, the bottom quality of the pond to imitate the sea area, sandy and semi-sandy as well, the surrounding sea area requires water quality without pollution, high transparency, pool water to be more than 1 meter.

2. Fertilizer water and disinfection

Before stocking, we should do a good job of clearing and disinfecting the pond. Two months before the seedling is released, we should first empty the pond water, then level the pond ground and expose it to the sun for half a month. Then we should infuse about half a meter of water and disinfect it with bleaching powder or lime water solution. After disinfection, inject new water again, filter well when injecting water, add about 1.5 meters of water, and start fertilizer water measures after water injection is completed. Apply 50kg organic fertilizer, 2-3kg urea and appropriate amount of ammonium phosphate per mu, which can accelerate the growth and development of phytoplankton, so that the fry have sufficient feed after stocking. After one or two weeks, the plankton reproduce, and the pool water is green and transparent.

3, fry requirements

When selecting fry, its specification and quality should be selected. High-quality fry with strong vitality, no disease, no damage to body surface, dark body color and good eating condition should be selected. The size difference should not exceed 2-3cm, otherwise it is inconvenient to raise and manage in the later stage, especially when feeding. The feed amount is not good. According to its size specifications can be grouped breeding, stocking also pay attention to density, generally stocking about 100 grams per mu fry 300-350 tail.

4, water temperature requirements

Epinephelus in artificial culture need to pay attention to the water temperature, especially in the seedling period, suitable for growth of water temperature in 28-31 degrees, when the water temperature is lower than 23 degrees, the seedling food intake decreased, many seedlings can not even open to eat, resulting in seedlings will starve alive, survival rate is very low, and once the water temperature is higher than 33 degrees, seedling activity will be abnormal, resistance decreased, easy to cause disease. Adult fish have certain adaptability to temperature, but they cannot tolerate low temperature. They should be harvested in time before winter or cold current, otherwise low temperature will kill them.

The above is the breeding conditions of grouper brought by the pro-agricultural network. I hope to help you. If you want to know more about fish farming, please pay attention to the pro-agricultural network.