What matters should be paid attention to in adult platypus culture in ponds?

Platypus fish may be a lot of people do not know very well, platypus fish from its name, we can see that its mouth shape is quite special, long and duck's mouth is somewhat similar, it is relatively rare in life, there are not many people who really understand the value of platypus fish.

What matters should be paid attention to in adult platypus culture in ponds?

1. Either monoculture or mixed culture is acceptable, mainly mixed culture, and the proportion is determined according to the specific local conditions. General silver carp + herbivorous fish ∶ Sturgeon = 6: 7 ∶ 1, herbivorous fish ∶ silver carp = 1 ∶ 1.5 × 3. No matter monoculture and mixed culture, it is necessary to match silver carp, because silver carp can control the number and growth rate of algae and avoid eutrophication.

2. Stocking density

① monoculture. When the body length is 50 cm and 60 cm and the weight is 1 kg, there are 100 tails per mu and 40 tails per mu at 2 kg and 3 kg.

② mixed culture. When the body length is 25 cm, it is 50 to 70 per mu, and at the end of the year it grows to 1 kg; when the body length is 50 to 60 cm, it is 20 to 50 per mu, and at the end of the year it grows to 2 to 3 kg. 7-8 per mu in the third year. Adult fish culture in ponds is not suitable for mixed culture in small areas or intensive high-yield ponds, because high yield, high density, ups and downs of dissolved oxygen and rotation are very disadvantageous to spoon Sturgeon.

Culture techniques of platypus fish

1. Seedling selection and stocking

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.

2. 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.

3. Patrolling boxes frequently

① strictly implements 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.

② ensures that the cage is safe in rainy days and stormy seasons, and pay attention to the reinforcement of cages 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.

③ keeps 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.

4. 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.

The living habits of platypus fish

Platypus fish feed on zooplankton and cladocera, especially water fleas, and occasionally eat small aquatic insects such as Chironomus larvae, which are similar to those of silver carp. The spoon-nosed Sturgeon, which is less than 12 cm long, can nibble away at zooplankton one by one, as well as small fish and shrimp. The fish is more than 12 centimeters long, and its feeding organs are well developed, switching to filter feeding, which can catch fast swimming copepods. As the spoon-nosed Sturgeon grows up, it also eats pellet feed.

Nutritional value of duck-billed fish

1. Platypus fish contains very high levels of collagen, which is simply a natural beauty sanctity for women.

2. Platypus fish contains hundreds of vitamins and a variety of amino acids, which has a very good health effect.

Duck-billed fish contains a lot of protein and vitamins, but low-fat foods will not get fat even if they eat a lot.

4. Platypus roe can be made into caviar. Caviar also has good nutritional value and can be used medicinally.

5. The meat of platypus fish contains anticancer factors, which not only has a certain anticancer effect, but also can strengthen the immunity of the body.

Duck-billed fish is a kind of fish with rich nutritional value, it can supplement a lot of nutrition of the human body, and often eating fish can also improve the immunity of the human body, so fish is more popular in our lives, and there is a lot of room for market exploration.