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Water quality environment
It is advisable to set up cages near the mouth of the estuary where the water surface is open, the water quality is good, and the wind speed is low. The water temperature is required to be in the range of 8°C to 30°C, and the current speed is less than 1m/s. The best flow rate is 0.5m/s.
Cage specifications
It is advisable to use a three-meter, three-meter, three-meter or six-meter, three-meter, and three-meter, three-meter, seamless mesh cages for seawater aquaculture. Its mesh specifications are: raising black pupae, puppies 0.5 centimeters, raising pupae 0.8 centimeters. Place a 1-meter 0.5-meter 1-meter multi-layer net cage in the cage as a squid resting platform, and keep 15 cm of cage escapement net cages open to prevent squid from running out of the box.
Seed delivery
It is advisable to stock squid with young ones, and put them at a density of 150 per square meter. If black puppies are released without pups, the density is 500 pounds per square meter. Before the seedlings are placed, they should be disinfected with a medicinal bath to prevent infection.
Feeding management
1. Water quality management Water quality management of trout farming is particularly important, requiring seawater specific gravity of 1.01 to 1.02, dissolved oxygen of 5 mg/l or more, and pH of 7 to 8.5. In recent years, some aquaculture farms have used the Sino-Japanese cooperative production of microbiological preparations such as EM to regulate water quality, dip and mix feeds, and prevent fish diseases. They have achieved successful experience and obtained good economic benefits.
2. Feeding feeds Feeding squid should be done with "four settings." That is, timing: In addition to feeding the feedstuff once every night at 8pm in the early spring and winter, the rest of the time is fed once every morning at 5am and 8pm. Positioning: Feed on a fixed set of bait stations. Qualitative: It is fed with a full price compound feed supplemented with multivitamins. Quantitative: The total amount of the diet is calculated as a percentage of the total body weight of the carp, with a 15% adult pupal stage, 3% young pupal stage, 5% pupal stage, and 0.5% to 1% high temperature and wintering period.
3. In time, the density of the squid after boxing is greatly increased after being raised for about one month. The individual differences are even more disparate. They must be screened and bred in a timely manner, separated by physical strength and individual size. Careful and meticulous procedures should be used in the screening and binning process to avoid scratching the fish, preventing infection, and disinfecting the bath.
4. Replace cages In order to keep cages clean, cages should be replaced in time. The summer and autumn seasons are replaced once every 10 days, and once every 50 days in the early spring and winter. The replaced cage should be cleaned immediately for use in the next time.
5. Daily management Group management of cages. Daily testing of water quality, good weather, water temperature, pH, feeding, disease prevention and other detailed records. Observe the feeding and growth of squid, find problems, and deal with them in time.
Prevent disease
Aquaculture raises water first, and good water quality is the key to prevent salmon disease. If the water quality in the cage is contaminated but not ruled out, there may be outbreaks of rotting, bad tailing, and "madness" and various parasitic diseases in the high-temperature period. Maintaining the water body under the effective control of beneficial microbes is a necessary condition for the success of raising fish, and it must not be taken care of. When there are symptoms such as bacterial gill rot disease, immerse the diseased fish with 100 times the high concentration of EM original dilution, you can also use 10 times to 50 times the ultra-high concentration of EM original dilution to directly rub the affected area, usually 4 days to 5 days Can heal. When bacterial enteritis occurs, a high concentration of EM decoction diluted feed can be fed immediately and the effect is very good.
In recent years, although the market price of squid fluctuates, the selection of squid species such as European eel, which is rich in resource of seedlings, and sea bream culture in sea cages is still promising. The economic benefits are also considerable.