Duck-billed fish culture technology what kind of feed is fed for duck-billed fish culture

Duck-billed fish, native to the Mississippi River Basin in the United States, is a large freshwater economic fish. Because this kind of fish is relatively expensive, it is not very common on the dinner table of ordinary life. But this does not mean that it is not popular, on the contrary, this kind of fish currently has a very good market prospect, so let's first learn its breeding skills.

Culture techniques of platypus fish

1. Culture location

The breeding site of duck-billed fish is selected in Chengqian Washan Reservoir. The water area of the culture area is large, the water depth is more than 6 meters, the dissolved oxygen is 6-9 mg / L, the pH value is 7-8.4, the total hardness is 20-40 mg / L, ammonia nitrogen is 0.02-0.06mg / L, nitrite is 0.0015-0.01mg / L, the water quality is good.

2. Seedling selection

Duck-billed fish fry choose high-quality seedlings with strong physique, lively swimming, neat specifications, disease-free and injury-free. The stocking density is 20-40 tails per square meter. The specification is 10-15 cm. According to the sensitive characteristics of duck-billed fish fry to the change of water temperature, the temperature difference should not be too large when the larvae enter the box, and the temperature difference should not exceed ±2 ℃ and be consistent as far as possible. Disinfect the fish for 8-10 minutes with 1.5-2.0% salt water before entering the box.

3. Scientific bait

At the initial stage of stocking, platypus fish were mainly fed to zooplankton (such as red worms), then gradually domesticated and changed to floating pellet bait, supplemented by night light bait. The bait should be fresh and non-deteriorating, rich in nutrition and palatable in size, and the bait should follow the principle of "four determinations".

4. Daily management

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. Always pay attention to reinforce the cage in rainy days and stormy seasons. Also often check whether the cage is damaged, find the damage and repair it in time. Find abnormal situation and take measures in time.

What kind of feed do you feed for platypus fish culture?

Duck-billed fish with strong adaptability, rapid growth, docile temperament and short food chain is the only fish that feeds on zooplankton among all Sturgeon. Its bait comes from a wide range of sources, and is easy to raise and catch, so it is suitable for aquaculture in reservoirs, lakes and ponds.

Duck-billed fish is a kind of filter-feeding fish, which mainly feeds on zooplankton and cladocera, especially on water fleas, and occasionally eats small aquatic insects such as Chironomus larvae. 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 shrimps; when the fish is more than 12 cm long, its feeding organs are well developed and converted to filter feeding, which can catch fast swimming copepods. In the juvenile fish stage, because of its long kiss and peculiar shape, when eating commodity with pellet feed, the abdomen is upward, the action is unique, lovely, and has high ornamental value, so it can be raised as a kind of high-grade ornamental fish.

How many duckbill fish can be raised on an acre of water?

The stocking density of platypus fish is also different in different periods. Generally speaking, when the fish are smaller, the stocking density can be higher. When the fish grow up, the stocking density will gradually decrease.

The stocking density of duck-billed fry begins with 200 fish / square meter, and decreases to 100 fish / square meter when it grows to 5 centimeters. One mu equals 667 square meters. When the platypus fish grow up, it is generally more appropriate to have 2000 fish per mu.

What are the advantages of breeding duckbill fish

1. Platypus fish have a wide range of suitable temperature. Not only not afraid of low temperature, but also able to withstand high temperature. In winter, even if the water surface freezes, as long as there is enough dissolved oxygen in the water, it can live in the water under the ice; in summer, the surface temperature of the pond tends to exceed 35 °C, it can still grow normally.

2. Growing fast. Platypus is one of the fastest growing freshwater fish. The fish fry hatched in that year can reach 1.5 jin each by the end of the year. Captive culture can reach more than 2 jin.

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 illness has occurred so far.

Duck-billed fish has a very strong ability to adapt to the culture environment, and it grows fast, so it has a good culture prospect. Above also introduced some of its breeding methods, I hope it will be helpful to you, can increase your breeding experience.