Scientific culture technology of platypus fish

Platypus fish may not eat many people, but as long as people who eat platypus fish will love its taste, its meat is very delicious, and there is no less thorns, especially suitable for children and the elderly to eat, but the price of platypus fish is much more expensive than ordinary fish.

Scientific culture technology of platypus fish

1. Breeding site selection

The breeding site is selected in Chengqian Washan Reservoir. The water area of the culture area is large, with a water depth of more than 6m, dissolved oxygen 6~9mg/L, pH value 7-8.4, total hardness 20~40mg/L, ammonia nitrogen 0.02~0.06mg/L, nitrite 0.0015~0.01mg/L. The water quality is good, which meets all the requirements of GB1160 Fisheries Water quality Standard and NY5051-2001 Water quality Standard for pollution-free Food Freshwater Culture.

2. Cage setting

The cages are set with reference silver carp cages, and the waters with rich planktonic biomass are selected, which requires smooth flow, shelter from the wind and the sun, and the simple bamboo frame is used in the quiet cage frame. The box is made of polyethylene knotless mesh. The size of the cage is 5m × 5m × 2.5m and the mesh size is 2.5cm. The spoon Sturgeon is afraid of light, and the surface of the cage is covered with black film.

3. Seedling selection

Choose high-quality seedlings with strong physique, active swimming, neat specifications, disease-free and injury-free. The stocking density is 2040 tails per square meter. The specification is 10~15cm. According to the characteristics that the seedlings of spoon-nosed Sturgeon are sensitive to the change of water temperature, the temperature difference of the seedlings should not be too large, and the temperature difference should not exceed ±2 ℃ and should be adjusted consistently as far as possible. Disinfect the fish for 8-10 minutes with 1.5% 2.0% salt water before entering the box.

4. Scientific bait

At the initial stage of stocking, zooplankton (such as red worms) were mainly fed, and then gradually domesticated and changed to floating pellet bait, supplemented by night light bait. The bait should be fresh, non-deteriorating, rich in nutrition and palatable in size. Bait follows the principle of "four determinations". 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%. Timely high speed according to food intake, weather, water quality and so on. The baiting times were 07 ∶ 08 ∶ 00:00, 11 ∶ 00 12 ∶ 00:00 and 18 ∶ 00 19 ∶ 00:00, respectively.

5. Separate boxes in time

The growth rate of spoon-nosed Sturgeon is very fast, so it should be cultivated in time to avoid polarization and help to improve the survival rate.

6. Patrolling boxes frequently

A, strictly implement the morning, middle and evening box patrol system to carefully observe the feeding and activities of Sturgeon, and remove the residual bait in time. Flush the cage regularly to prevent the mesh from clogging and affect the exchange of water inside and outside the box.

B, ensure that the cage is safe in rainy days and rainy season, and pay attention to strengthening the cage at any time. Also often check whether the cage is damaged, find the damage and repair it in time. Black shading nylon cloth and anti-theft net should also be installed on the top of the cage.

C, make daily records of air temperature, water temperature, feeding amount and the number of morbidity and death every day. Find abnormal situation and take measures in time.

7. Prevention and treatment of fish diseases

Adhere to the principle of "giving priority to prevention and health management". The seedlings are put into the box after bathing with 1%-2% salt or 0.4mg/L 's dibromohydantoin every time, and the cage is disinfected with 15mg/L 's quicklime and 0.3mg/ L dibromohydantoin every 20 days or so. The use of illegal drugs is strictly prohibited in the waters around the cage.

Is platypus fish profitable?

Platypus fish mainly eat phytoplankton, can be raised, the growth rate is fast, starting in late May every year, to grow to more than 0.5 kg in winter, can be caught and listed on the market. "despite the strange appearance of the platypus fish, it's valuable! It tastes good, too. " Duck-billed fish is delicate in meat and does not have too many fish bones, so it has a special flavor. Caviar made from its caviar can be sold for $500 a kilogram.

Although the technical requirements of special fish culture are high, and the cost is high, a duck-billed fish with a seedling of 6mur7 cm is about 6.5 yuan, and the survival rate is more than 70%, while the low one is only 20%, and the average survival rate is about 50%. When the platypus fish grows to 0.5 kg and can be put on the market, it needs to consume about 6 yuan of feed and about 3 yuan of contract fee, labor fee and electricity fee. With a survival rate of 50%, the total cost per kilogram of platypus fish is about 44 yuan. According to the current market price, the wholesale price of platypus fish is about 70 yuan per kilogram, the retail price increases slightly to about 100 yuan per kilogram, and the platypus fish made into finished dishes rises to 220 million yuan per kilogram. The average farmer can make a profit of about 26 yuan per kilogram. When the market is good, the profit of raising a kilogram of ordinary sea bass is only about 2 yuan, which can only be maintained at about 1 yuan. By contrast, the profit of raising platypus fish is more than ten times higher.

Nutritional value of duck-billed fish

1. Platypus fish is rich in collagen, a variety of vitamins and amino acids, with pharmacological and health care effects.

2. The adult platypus fish has more meat and less spines, and the fish bones can be swallowed after being crushed.

3. Duck-billed fish is a kind of meat with high protein and low fat.

4. The processing of caviar into caviar is called black gold nugget, which has high edible value.

5. Duck-billed fish has high medicinal value. The anticancer factors contained in its cartilage and spinal cartilage have a certain anticancer and enhanced immune effect.

The feeding method of duck-billed fish

1. Platypus fish have a wide range of suitable temperature. Not afraid of low temperature, but can withstand high temperature. As long as there is enough dissolved oxygen in the water, you can live in ice or underwater water. If the surface water temperature of the pond in summer exceeds 35 °C, it will not affect its normal growth.

2. Growing fast. Platypus is one of the fastest growing freshwater fish.

3. Feed saving. It mainly eats zooplankton and does not need to be fed separately in captivity. If exclusive cultivation, the feed ratio will not exceed 1.3 per cent.

4. Easy to catch. Its habit is similar to that of silver carp and is not good at jumping. The arrest rate of the first net is more than 90%.

5. The disease is less. Mainly parasites, no major diseases have been found so far.

Only by mastering the scientific aquaculture technology, can we develop the aquaculture business better, so no matter which industry we do, only continuous innovation and learning can create the wealth we want, and will not be eliminated by the society. If you stick to the rules, you will only end up in failure.