CATDOLL : CATDOLL: Some people say that duck-billed fish farming is a scam. Is this true?

Some people say that duck-billed fish farming is a scam. Is this true?

Check this box regularly in the morning, noon and evening, and record its price. If you have money, of course it is good, but aquaculture is very risky! I have worked in fish farms for 8 years, and sometimes feed on small aquatic insects such as vertebrate larvae. The duckbill fish is less than 12 cm long and can swallow zooplankton, small fish and shrimp one by one. After the fish is more than 21 cm long, its feeding organs are well developed and transferred to the filter feeding mode, which can catch swimming.

The water vapor with rich material quality requires stable water flow, shelter from wind and sun, quiet environment, and the cage structure adopts a simple bamboo muscle structure. At the special breeding base in Sanhui Village, workers are breeding ducks. This year, the base introduced more than 30 varieties of Guangdong duck skin for breeding, and it is expected that thousands of kilograms of duck skin will be on the market next year. Sanhui Village is surrounded by mountains. The forest vegetation on the mountain is rich. The price of breathing is 800 yuan/kg, that is, 260-360 yuan/kg. At the end of 1999, especially at a price of 1 kg per tail, the main raw materials are rarely grown by farmers themselves. When choosing leftovers,

Be careful to choose leftovers that are energetic, healthy, and have a normal diet. There is no requirement for size, it can be large or small. We should buy the right amount according to the expected breeding pond. Duckfin fish like to live in a big house. For example, animal husbandry is because the hotel price is too high (reaching 800 yuan/kg at the end of 1999). Consumers have no choice but to consume small fish, and the export price is the first, which is particularly difficult to support.

These aquatic products are promising. Therefore, from these two perspectives, fish and duck farming has market development prospects? Fish and duck farming without polyethylene nets costs 45-60 yuan per kilogram. The cage specifications are 5 meters x 5 meters x 2.5 meters, the mesh size is 2.5cm, the spoon is afraid of light, the cage surface is covered with black film, and the morning, noon and evening inspection system is strictly implemented. Carefully observe the feeding and warehouse activities, remove the remaining bait in time, and clean the cage regularly to prevent the mesh from clogging and affecting the water exchange inside and outside the cage.

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Can duck-billed fish be raised in Chishui, Zunyi, Guizhou?

In Chishui, Zunyi, Guizhou, duck-billed fish can be cultured. Duck-billed fish has strong adaptability, rapid growth, gentle temperament, and a short food chain. It is the only fish among all sturgeons that feeds on zooplankton. It has a wide source of bait, is easy to raise and catch, and is suitable for breeding in waters such as reservoirs, lakes and ponds.

Farming site selection

The breeding site is located in Chengqian Wadou Reservoir. The breeding area has a large water area, a water depth of more than 6m, dissolved oxygen of 6~9mg/L, pH value of 7~8.4, total hardness of 20~40mg/L, ammonia nitrogen of 0.02~0.06mg/L, nitrite of 0.0015~0.01mg/L, and good water quality, which meets all the requirements of GB1160 "Fishery Water Quality Standard" and NY5051-2001 "Water Quality for Pollution-free Food Freshwater Aquaculture".

Grid cage installation

The cages are set up with reference to silver carp cages. Waters with rich plankton biomass are selected. The water flow is stable, the cages are sheltered from the wind and face the sun, and the environment is quiet. The cage frame is a simple bamboo frame. The cage material is polyethylene knotless mesh. The cage specifications are 5m×5m×2.5m, and the mesh size is 2.5cm. The spoonbill sturgeon is afraid of light, so the surface of the cage is covered with a black film.

Seedling selection

Select high-quality seedlings that are strong, active, neat, disease-free and uninjured. The stocking density is 20 to 40 per square meter. The size is 10 to 15 cm. As the seedlings of Chinese sturgeon are sensitive to changes in water temperature, the temperature difference should not be too large when the seedlings are put into the box. It is better to not exceed ±2℃ and try to adjust it to be consistent. Disinfect the fish body with 1.5% to 2.0% salt water for 8 to 10 minutes before entering the box.

Scientific baiting

In the initial stage of stocking, plankton (such as bloodworms) is mainly fed, and then gradually domesticated and switched to floating granular bait, supplemented by night light bait. The bait must be fresh and non-deteriorated, nutritious, and palatable. Feeding follows the "four fixed" principle. When the water temperature is 20-30℃, the daily feeding rate is 1.5%-3%; when the water temperature is below 20℃, the daily feeding rate is 0.5%-1.0%. It is timely and high-speed according to the feeding situation, weather, water quality, etc. The number of feeding times is 3 times a day, at 07:00-08:00, 11:00-12:00, and 18:00-19:00.

Timely boxing

The spoonbill grows very fast and should be cultivated in different specifications in a timely manner to avoid polarization, which will help improve the survival rate.

Patrol Box

1. Strictly implement the morning, noon and evening inspection system to carefully observe the feeding and activities of sturgeons and remove the remaining bait in time. Rinse the cage regularly to prevent the mesh from being blocked and affecting the water exchange inside and outside the cage.

2. Ensure the safety of the cages. During rainy days and stormy seasons, always pay attention to the reinforcement of the cages. Also check the cages frequently for damage and repair them in time if any damage is found. Black shading nylon cloth and anti-theft nets should also be installed on the top of the cages.

3. Keep daily records of air temperature, water temperature, feeding amount, number of cases and deaths, etc. If any abnormal situation is found, take timely measures.

Fish disease prevention

Adhere to the principle of "prevention first, health management". When stocking and dividing the seedlings, they are bathed in 1%~2% salt or 0.4mg/L dibromohydantoin and other drugs before entering the cages, and every 20 days or so, 15mg/L quicklime and 0.3mg/L dibromohydantoin are sprayed in the cages for disinfection. It is strictly forbidden to use prohibited drugs in the waters around the cages.

Oh, it should be ok.