In recent years, squid has become one of the most popular varieties for freshwater aquaculture due to its strong adaptability, complex food habits, rapid growth, strong disease resistance and delicious meat taste. Then, how can the pond's main squid get high yields when it comes out of the pond?
Proper density
In order to reduce the cost of breeding, it is best to use ponds to cultivate large-size squid species, and lay 0.8 to 12,000 larvae per mu for stocking summer carp and grow to 50 to 60 grams before turning to ponds for adult fish breeding. It is best to breed 1500-1800 fish species with 50-60 grams per acre, so that the fish size can reach 350-400 grams.
Collocation
To cultivate large-sized squid species, do not use grass carp and squid. Instead, choose squid and squid. The number of squid should be about 20% of the total squid population, while squid should account for about 10% of squid. It is not too early to match the species' stocking time, especially if the fish is used too early to influence the domestication of the catfish.
Domestication of fingerlings
Squid is a fish living in the lower and middle layers of the water body. The fish pond that raises the main carp needs to domesticate the fish species so that all the carp can quickly rise and catch food after being fed, which is very favorable for the growth of the carp. During domestication, attention should be paid to five points: First, domestication at the time of culturing fingerlings is relatively easy; secondly, appropriate amounts of additives can be added to the feed during domestication to shorten the acclimation time; and thirdly, during the period of acclimation, the ponds can be reduced in the case where the feed density has been determined. The water level is relatively increased in density, which is more conducive to domestication. Fourth, maggots and squid species should be released after the main squid uptake and eating habits form. Fifth, during domestication, pond water quality should be “lean†and “cloudyâ€.
Feed particle size
The grain size of feedstuffs for salmon should be “small enough to be smallâ€. For fishes with a specification of 10 grams or less, feeds with a particle size of 0.5 mm should be selected, 1 mm for a specification of 10-30 g, 1.5 mm for a selection of 30-75 g, 2 mm for a selection of 75-100 g, 150-300 The choice of grams is 2.5 millimeters, and the choice of 300 milligrams is 3.2 millimeters.
The feeding rate of carp culture ponds depends on the size of the carp and the water temperature of the pond. The feeding rate is 2-3.5% when the size is 25-50 grams, and the feeding rate is 1.7-50 when the size is 50-100 grams. 3%; 1.4-2.6% for 100-200 g; 1.2-2.3% for 200-300 g; 1-1.9% for 300 g or more. When the water temperature is lower than 15°C, the feeding rate takes the lowest value; at 16-23°C, the feeding power of the carp is strong, and the feeding rate is averaged; when the water temperature is 24-29°C, it is the most vigorous period of carp appetite, and the feeding rate should be Take the highest value to ensure that the bait is sufficient.
Disease prevention and control
Carp is resistant to disease and there are no major infectious diseases. Relatively speaking, hemorrhagic anchor head lice are more harmful. The main features are the lack of power and pale color of the floating squid swimming, the parasitism of the parasitoids on the abdomen and the spine of the fish, and the presence of mung beans or peas on the body. The size of the congestive erythema, the lesions loose or loose scales, mucus increased, a small number of obvious ulcers. In the onset season, 90% of crystal trichlorfon is sprayed on a small area of ​​the main pool every cubic metre every half month, and 0.3 grams of crystal trichlorfon is used. For a large area of ​​larval rearing pond, dipterex insects (bags) can be used around the food field. 1-2 times a month, every time you hang for 2 days, have a good preventive effect. For diseased ponds, 90% crystals of trichlorfon 0.5 g and 0.2 g of ferrous sulfate mixture can be spilled per cubic meter at a time. The effect is good.
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