Whether the catfish is good or not, the key is to do a good job in culture management.

Catfish is easy to raise, and catfish has a strong ability to adapt to the environment, but the water quality of cultured catfish should be clear and free from pollution, disinfect the pond before putting it, and select healthy and disease-free fish fry to ensure that the feed is scientific and reasonable. do a good job in breeding management and disease prevention and control work, do a good job in pond patrol every day, timely change of water, increase oxygen, and promote the growth of seedlings.

Is catfish easy to raise?

Catfish, also known as Silurus meridionalis, live in the middle and lower layers of rivers, lakes, reservoirs and pits and ponds. It is a carnivorous fish and is the most widely distributed fish in the catfish family. They do not have high requirements for the environment and have a strong ability to adapt, so it is relatively easy to breed.

Catfish culture technology

1. Growth environment

The pond where catfish is farmed requires that the water quality is clear and pollution-free. In order to ensure good water quality, an appropriate amount of aquatic plants such as water lotus are planted on the water surface to provide shade for fish fry, and can also play a role in regulating the water quality.

2. Pre-release preparation

30 days before the release of fish fry, the pond was disinfected with quicklime; 7 days before release, appropriate amount of base fertilizer was applied to the pond for fertilizer and water to promote the reproduction and growth of plankton in the pond and provide sufficient bait for fish fry.

3. Selection and release of fish fry

Choose injury-free, healthy and lively fry with the same size and size above 3cm. Mix salt and water at 1:30 and soak the fry for about 5 minutes before release.

Select sunny days to release seedlings, the release density is generally controlled at 6000-10000 pieces / mu, and add new water and a small amount of chemical fertilizer to the pond every 2-3 days after release to ensure water quality and promote the growth of fish fry.

4. Feed feeding

Cooked egg yolk or small cladocera and copepod plankton are used as the opening food for fish fry. As the fry grows, they can be fed with water fleas, mosquito larvae, water earthworms, maggots or pig blood, artificial seedling formula feed, and so on.

At the initial stage of fish fry cultivation, the fry were mainly fed with animal feed, and when the fry grew to 5-7cm, they were domesticated and gradually transferred to plant feed to achieve the combination of animal and plant feed to ensure balanced nutrition.

Feed feeding follows the "four fixed" principle, the daily feeding amount is controlled at about 5-8% of the total weight of the fish, and the feeding amount is adjusted every 7-15 days.

5. Reproduction management

Catfish enter the peak breeding period from March to May every year, and the mature female and male species are selected and grouped according to 3 males and 1 female, and then put into the cloth net.

Before egg collection, check the abdominal softness of the female with your hand and squeeze it gently. If there are eggs excreted, you can use the dry guide method to collect eggs. If you do not produce eggs after pressing with your hands, you have to wait for a period of time before you check.

Wrap the female fish that can ovulate with gauze, face its reproductive pores to a clean, anhydrous porcelain container for egg collection, gently squeeze the eggs forward to the anus of the female fish, and the eggs will slowly fall into the container.

After egg collection is completed, the prepared sperm suspension will be stirred with fish fry, then add appropriate amount of water, wash off the excess sperm, repeat several times, and artificial insemination will be completed.

The fertilized egg is a green-yellow ball with slightly red spots, its diameter is about 1.65-1.8mm, there is no stickiness at first, but it will not be sticky until 20 minutes later, so sprinkle it on the attached egg piece before they are not sticky, and stir gently with feathers to ensure that the fertilized egg adheres evenly and improve the hatching rate.

6. Disease prevention

Change the pool water frequently and replace 3 pools of water every 10-15 days to ensure that the water quality is good to prevent fish fry from getting sick.

After one month of stocking, fish fry are prone to viral fin rot when their body weight is about 50g, which does great harm to the fish. 10,000 units of bleach can be used to sprinkle the whole pond for prevention and treatment.

In the process of culture, 4000 units of crystal trichlorfon or 0.6-7000 units of cupric sulfate and ferrous sulfate mixture were sprinkled into the pond at 5:2 to prevent parasitic diseases.

Do not feed the fish with spoiled and moldy feed, regularly add 0.05-0.1% fresh garlic juice to the feed fed to the fish fry, add 20-100g oxytetracycline powder per kilogram of feed for 5-7 days, which can prevent and treat enteritis.

To ensure that the water quality is clean in the breeding process, do not use unfermented fertilizer, sprinkle 2-4g/m ³gallnut and quicklime water into the pond, every other day, can sprinkle 2-3 times continuously, can effectively prevent and treat blackbody disease.

7. Daily management

Keep patrolling the pond every day and change the water frequently to ensure good water quality; if fish fry jump out of the water, the water quality is too fat and the oxygen content in the water is low. It is necessary to inject new water into the pond in time, release the old water, and put sufficient live bait into the pond.

When the weather is muggy or thunderstorm, timely add new water to the pond and increase oxygen to provide a good growth environment for catfish and promote its growth and development.