Largemouth catfish breeding method, how to breed largemouth catfish

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One square is stocked with 50-100 largemouth catfish. Breeding methods: 1

At present, the cultivation of largemouth catfish is mainly monocultured. Polyculture and cage culture, fiber marketing Polyculture selects ponds with many wild trash fish, and it is advisable to stock 50 to 100 fish per square. 2.

Usually a square water surface is stocked with 8 10 cm fingerlings of about 50-100, with large-sized silver carp fingerlings 100 The feed for largemouth catfish is usually small trash fish and shrimp, screw meat, livestock and poultry offal and chilled fish.

1. Breeding conditions: When breeding largemouth catfish, the water temperature should be kept between 24-28 degrees, and the dissolved oxygen content should be 3 mg per liter. 2. Disease prevention methods:

During the breeding period, garlic juice is mixed into the feed to improve disease resistance, and the feed mixed with oxytetracycline is fed after illness. 3. Feeding management: Open feed selects zooplankton such as rotifers, and provides minced meat after the body length exceeds 5 cm.

1. Breeding conditions

When breeding largemouth catfish, the water temperature should be kept between 24-28 degrees, the water pH value should be controlled between, and the dissolved oxygen content should be more than 3 milligrams per liter.

2. Disease prevention methods:

Largemouth catfish has strong disease resistance after adulthood, but the seedling stage is susceptible to disease, in the process of breeding, garlic juice should be added to the feed to improve the disease resistance of the seedlings, if the disease has appeared, you can mix oxytetracycline powder into the feed, and feed with oxytetracycline for a week.

3. Feeding management

Largemouth catfish is a carnivorous fish, ferocious by nature, in the early stage of breeding to provide it with a protein content of 45% of the bait, adult fish breeding protein content dropped to 40%, and the open feed can choose copepods, cladopods and rotifers, waiting for the catfish body length to reach 5 cm, to provide minced fish, chicken and other feed.

<>1. Environmental requirements: build ponds in places with sufficient living water sources, and the water retention of ponds must be good and impermeable.

2. Stocking preparation: 2 weeks before stocking, you can clean the whole pond with quicklime solution after releasing the water, soak it for 1 week, and then wash the pond clean.

3. Stocking: Generally, about 20,000 fish fry can be put into 1 mu pond, or less. When stocking, be sure to choose fry of the same size, not too large or too small.

4. Feeding: You can choose shell meat, snail meat, small fish and shrimp and grain powder, nutritional powder mixed feeding.

1. Environmental requirements

1. Breeding largemouth catfish must have a clean water source, and ponds can be built in places with sufficient living water sources, and the water retention of ponds must be good and not permeable.

2. Some aquatic plants can be planted in the pond, which can provide a habitat for largemouth catfish, but aquatic plants cannot grow in a large area, which can avoid blocking the water surface, blocking oxygen, and causing poor breathing.

3. The inlet and outlet can be covered with mesh to prevent other animals from entering, and at the same time, it can also prevent fish from escaping, and the pond must be heightened and reinforced.

2. Preparation for stocking

1. 2 weeks before stocking, you can use quicklime solution to clean the whole pond after releasing the water, and after soaking for 1 week, the pond can be washed and cleaned.

2. Then soak in water, until 2 days before stocking, after the water is released, it must be refilled with water to prepare for stocking.

3. Before stocking, the fry should be soaked in light salt water or other disinfection solution for 20 minutes, and must be stocked after sterilization, and the feed should also be prepared for feeding.

3. Delivery

1. Generally, about 20,000 fish fry can be put into 1 mu pond, or it can be less.

2. When stocking, we must choose the same size of fish fry, not too large or too small, otherwise it will lead to uneven growth and cannibalism, and the feeding time can be selected at noon when the temperature is suitable.

Fourth, feeding

1. After a few hours of feeding, you can start to feed the feed, and the feed can be made into powder with some grain, and then mixed with water and kneaded into a ball, so as to avoid the waste caused by loosening too quickly when entering the water.

2. You can also feed it some shell meat and snail meat, but be sure to chop it.

3. Or feed small fish and shrimp, mix them with grain powder and nutritional powder and feed them twice, twice a day.

5. Management

1. Fertilization can be carried out in the water, cultivating natural bait for the fish to eat, we must pay attention to changing the water at ordinary times, the water source should always flow, prevent the fish from escaping in rainy days, and pay attention to increasing oxygen in the water when the temperature is high to maintain the oxygen in the water.

2. The common disease of largemouth catfish is printing disease, and when the disease is found, it must be timely **, which can be isolated and disinfected in the whole pool, and at the same time use bleaching powder for disinfection.

3. The common insect pests of largemouth catfish are wheel insects, which can be mixed with copper sulfate and ferrous sulfate during control.

1. Water quality: Largemouth catfish should be cultivated in a clear pond with less plankton. 2. Temperature:

The optimal growing temperature for largemouth catfish is between 22-28 degrees Celsius. 3. Feed: You can put nutrient-rich bait such as fish bones and shrimp bones in the water.

4. Disease: Clean the bottom of the pond frequently, and do not feed it with moldy and rotten food.

1. Water quality conditions

When breeding largemouth catfish, you need to choose a clean, non-polluted water source, if there are more microorganisms and dirt in the pool water, it will lead to bacterial breeding, which will affect the normal growth of largemouth catfish.

2. Adjust the temperature

The most suitable growth temperature for largemouth catfish is between 22-28 degrees Celsius, when the water temperature is higher than 36 degrees Celsius, the fry will stop growing, so it is necessary to add more new water to the pond water in summer to avoid heat stroke and whitening of largemouth catfish.

3. Feed feed

When raising largemouth catfish, you need to add protein-rich foods such as fish bones, soy milk, and egg yolks to the water to ensure that the fish consume sufficient nutrients, and feed the largemouth catfish once a day in the morning and evening.

4. Prevention and control of diseases

Largemouth catfish are very resistant to pesticides, in order to prevent the fry from being infected with diseases, it is necessary to clean the bottom of the pond frequently, clean up the debris in the water, and when feeding the largemouth catfish, it is necessary to ensure that the bait is fresh to prevent the fish from malaise.

Largemouth catfish is distributed in the major waters south of the Yangtze River in China, with a common weight of about 2 to 5 kilograms, and began to be domesticated in the mid-80s of the last century.

This article introduces the breeding conditions and fingerlings of largemouth catfish, and talks about the breeding technology of largemouth catfish.

1. Breeding conditions of largemouth catfish in the south Liangshan penglargemouth catfish is a warm water fish, the suitable water temperature for survival is 0 38, the suitable water temperature for growth is 12 30, and the most suitable water temperature for growth is 25 28.

When the dissolved oxygen in the water is more than 3 milligrams of liters, the southern largemouth catfish grows normally.

When the dissolved oxygen in the water is less than 2 milligrams of liters, floating heads begin to appear.

When the dissolved oxygen in the water is less than 1 milligram liter, it will lead to death. File.

There are two basic conditions for breeding largemouth catfish:

1. There is sufficient water source, water quality that meets fishery standards, and convenient intake and drainage.

2. The living temperature is 0 38.

The optimal water temperature for growing is 24 28.

The optimal pH range is:

The requirement for dissolved oxygen in water is slightly higher than that of domestic fish.

Normal growth above 3 mg l.

Above 5 mg l, the growth rate is the highest and the feed conversion rate is the highest.

Second, the largemouth catfish seed culture just hatched fry completely rely on their own yolk for nutrition, about 2 days, the yolk begins to slowly disappear, larvae can swim horizontally normally, you can go down to the pond to eat.

The open feed for fry can be boiled egg yolk or small branched oaks and copepods.

Boil the eggs, peel the shell, take the yolk and wrap it in gauze, squeeze the egg yolk in a dish with water to form egg yolk granules slurry, and pour wine throughout the pool.

As the fish continues to grow, you can feed daphnia, midges larvae, earthworms, maggots and a variety of small fish fry, or feed some silkworm chrysalis powder, pig blood, artificial seedlings with feed, etc.

Generally, 6,000 10,000 largemouth catfish fry are stocked with 3 cm long, when the catfish fry body length has grown to 5 7 cm, at this time, it is necessary to pay close attention to domestication, feed artificial bait, and the protein content in the feed reaches more than 45%.

3. The feed of largemouth catfish adult fish is mainly artificial compound feed, which requires crude protein 36% 42%, and particle diameter of 3 mm and 5 mm.

Under the conditions of pond culture, fresh animal feed can be fed in conditional places, including all kinds of wild miscellaneous fish, domestic fish fry, tilapia larvae, animal offal, earthworms, fly maggots, snail mussels, etc., these feeds are suitable for small-scale farming.

Generally, adult fish feed can be divided into the following proportions: 25% fish meal, 18% peanut kernel meal, 5% yeast powder, fish oil, corn meal, compound amino acids 2%, premix.

1. The main largemouth catfish is selected to have an area of more than 3 acres and a water depth of more than 2 meters.

800 1000 fingerlings of about 10 cm per mu, and 100 chain, bighead carp and grass carp of 80 100 grams of polyculture.

It's easy to raise, but it's not easy to breed.

Largemouth catfish is one of the fastest and largest species of catfish, with a common weight of 5 10 kg and the largest weight of 60 kgIts head is wide and flat, its eyes are small and its mouth is large, so it is called a largemouth catfish. Its upper and lower jaws are densely covered with inward-barbed fine teeth, making it extremely difficult for prey to escape once bitten.

Adults have two pairs of whiskers, one with long maxillary whiskers and the other with short mandibular whiskers, which are often difficult to spot, but have three pairs of whiskers at the juvenile stage. Its dorsal fin is short, clustered, and without hard spines; The pectoral fin has a stout hard spine, the outer side of which is not distinctly serrate, but the hand is rough to the touch; anal fin extra-long and connected to caudal fin; The caudal fin is small, concave in the middle, and the upper lobe is long and the lower lobe. The body color of largemouth catfish varies depending on the environment and the type of food.

The dorsal and lateral sides are mostly yellowish-brown, blue-gray, yellowish-green, and the abdomen is grayish-white, mixed with black spots, but there are no cloud-like patterns, and the fins are grayish-black.

First, the main pond breeding.

1. Fingerling stocking In order to improve the survival rate and improve the breeding efficiency, the largemouth catfish fingerlings must be more than 8cm, and the specifications are neat, and the stocking density is 8cm-1ocm The specifications are 1000-1500 per mu; 10cm-12cm per mu put 800-1200 carp, 150g-250g large-size bighead carp fingerlings in the pond with 100-120 carp to adjust the water quality.

2. Bait feeding Largemouth catfish is a carnivorous fish, mainly using live fish or chilled fish and animal offal as bait, but it can also be artificially domesticated to feed with piglets.

1) Carnivorous bait: when putting largemouth catfish fingerlings, the corresponding smaller than its carp, crucian carp and other fish species, still based on chilled fish pieces every day, can also be fed pig lungs, cattle lungs and other animal offal, when these animal feed can not be guaranteed, through artificial domestication, ingestion of artificial compound feed, can receive better results.

2) Artificial compound feed: the protein content of compound feed is 41%-50%, and each pool is equipped with (2-4) bait tables during feeding, which is convenient for observing the feeding situation.

3. Daily management.

Patrol the pond 3 times a day in the morning, noon and evening to observe the fish ingestion and growth, change the water every 5d-7d, strictly prevent the floating head of largemouth catfish and take corresponding preventive measures.