Catfish breeding technology

There are many species of eel, and the fastest-growing euphorbia and big eyelid are the preferred culture species. In order to develop and market the squid summer flower, it is necessary to fully meet the necessary conditions for the rapid growth of the squid in the breeding process according to the unique biological characteristics of the squid.

I. Pond conditions

The ponds with sufficient water supply, convenient water injection and drainage, good water quality, and less silt should be selected. The carp is like a hard bottom, with a freshly-opened pond as an example, with an area of ​​4-10 mu and a water depth of 2-2.5 meters. After selecting a good pond, it should be thoroughly cleaned, disinfected with quicklime, mud at the bottom of the pool, and species of water spinach at the poolside. Such shades can be used to meet the habits of nesting axilla during the day and its habitat and growth needs.

Second, the stocking conditions

After clearing the pond and applying ripening basal fertilizer, 0.8-1 meters of fresh water is added. After 3-5 days, the bait fry can be stocked and the summer carp is stocked again. The dissolved oxygen requirement of squid is very high, so the density should not be too large, otherwise the squid has great disparity in growth and affects the breeding effect. Stocking should be based on carp-based fish farming. According to the quality of the farming conditions and the level of technology, the average mu will be about 4 centimeters and 800 to 1200 tails of squid, and 30 ppm of formaldehyde will be used for disinfecting and dipping at the bottom. . It is advisable to go back to stocking time, not later than the beginning of June, to extend the growth period.

Third, feeding conditions

One time investment, should be put 20-30 times the bait fry, choose to slender body, no tough spine, poor swimming ability, low value of live small fish and shrimp as well, such as oysters, oysters, wheat, fish, quail, Grasshoppers, white pelicans, grass carps, etc. are palatable bait fish. Supporting ponds keep good feed for fish, in order to ensure good food and food. Carp gluttony, feeding rate is generally 7% -15%, bait fish remaining not less than 15% -20%, carp swallow specifications increase with its own specifications increase, its body length 50% -60%, As the fish increases, the eclipse gradually decreases, and can be effectively solved by using self-cultivated fry or supplementation of house fish, wild fish, etc. The palatability and quantity of bait fish are the most reliable guarantee for raising large specifications and yields. . 4 centimeters of squid summer flower, generally one day to devour about 3 bait fish, feeding can be controlled once a day for 5 days, each time the first cast large size body high fish, after the vote of small-size slender fish, bait coefficient of 4.5-5. When conditions permit, a suitable 0.5-1.7 kg egg-feeding shrimp will be added at the same time, which will not only supplement the good diet of the prawn, but also effectively adjust and improve the water quality. At the end of the year, more than 10 kg of shrimp can be harvested to increase the output value of the pond.

Fourth, management conditions

1. Qintangtang: The squid has a high requirement for dissolved oxygen. Once the lack of oxygen in the pool is often easy to float, so in the season when the food is prosperous and long, the weather is hot and thunderstorms in the evening, the on-duty should be strengthened. When the young shrimps are pooled to the poolside, they must immediately start the aerator, and they can also take measures in advance to prevent accidental death of the oxygen-depleted floating head. This is the key to ensuring the survival rate of the catfish.

2. Diligent flushing: The squid prefers clear water, prefers live water, and has better micro-fluid culture. Inject new water 1-2 times a week to keep the water fresh, have enough dissolved oxygen, transparency 40 cm, dissolved oxygen 4 mg/l. When the water in the pool is turbid, it can be splashed with alum or calcified water to clarify the water quality. The bait fish has oysters, which can control the pool water and fertilize the squid's demand for high water and dissolved oxygen. At the end of the year, it can add value to harvest about 100 kilograms of oysters and other fish.

3. Observe frequently: Observe the situation of the squid to feed on the bait. In order to judge the time, quantity, and size of the bait, the amount of fish in the pond will be determined. When it is found that the growth of the bait fish makes the pond's water quality excessively thin, Properly put some fish feed to ensure that the bait fish and squid grow in synchrony. If the bait fish is not eaten within 10 days after its release, it is necessary to analyze the cause to find out whether the water quality is bad or the fish is sick. Take appropriate measures in time. .

4. Diligence check: Regularly check the growth situation of squid, and if it is found that there is insufficient food or discomfort affecting growth, fish should be properly added. The carp is susceptible to diseases such as trichomonads, slugs, ringworms, grubs and other diseases before it is 10% in body length. It can be sprayed with 0.7ppm copper sulfate and ferrous sulfate mixture in the whole pool, and the effect is good.

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