There are many ways to raise Pelteobagrus fulvidraco artificially, including polyculture in Dan Yanghe, pond culture and reservoir culture, and even various forms of cage culture. Different scales of culture have caused different production and breeding benefits.
3. 1? Pond condition
The pond area of Pelteobagrus fulvidraco is not strict, but it can be large or small, but the water depth should be 1.5m? Above, the silt at the bottom of the pool should not be too thick. The pond needs a convenient irrigation and drainage system to ensure sufficient water. The pond should be disinfected with quicklime, and 75~90kg should be used per mu of pond? Lime is used to thoroughly remove wild fish and kill pathogenic bacteria.
3.2? Monoculture
The pond should be close to the water source, which is convenient for irrigation and drainage. The water depth of the pond is 1.5~2m? It is advisable to desilt and disinfect, and then the tail weight per mu is 2.5g? The number of Pelteobagrus fulvidraco fish is 6000~20000, and the special compound feed is used. The amount of fish fed to Pelteobagrus fulvidraco every day is 2~4% of the fish weight. During the hot summer and autumn, water is added once a week, and the water depth is 30cm each time. The water transparency is as high as 35cm, and the yield per mu can reach 1000? How much Jin?
In Guangdong and Guangxi, Pelteobagrus fulvidraco is mainly cultivated, and a small amount of fish or other valuable freshwater fish, such as sunfish, are also raised. What is the possibility of 5~6? Put it into the water in the month, 1~2? After 5 months, the thickness reaches 5~8cm, and it becomes fish pond aquaculture, and feeding begins. The density of aquaculture per mu can reach 6000~20000, and fish can be produced in August next year.
About farming 10? After months, most of them will meet the listing specifications (0.2g/ tail). The management of aquaculture is not complicated, but it is important to do a good job in preventing hypoxia and preventing insects. At 5~6? In may, there are many parasites. Pay attention to insect prevention, Pelteobagrus fulvidraco belongs to the bottom fish species. Oxygen content should be increased in the breeding process, so that the survival rate of seedlings can reach 80~90%, and the yield can reach 1500~3000g/ mu, and the highest can reach 6000g/ mu.
3.3? polyculture
On the surface of water bodies where the four major fish are mainly cultured, such as fences and ponds, or in special ponds where sunfish, shrimps, crabs and turtles are cultured, tail 10~20g can be put per mu? The species of heavy Pelteobagrus fulvidraco is about 150~200. Under the premise of not affecting the main aquaculture products, it can produce about two to four kinds of Pelteobagrus fulvidraco fish per mu, which is about 50? Jin. Mixed culture of Pelteobagrus fulvidraco can not only reduce the number of miscellaneous fish and shrimp competing for food and oxygen with the main fish, but also improve the production and output of the main species of fish, and also effectively control some parasitic diseases of domestic fish.
In Huzhou, Zhejiang Province, the aquaculture mode of mainly aquaculture Pelteobagrus fulvidraco, mixed culture of some white fish and mixed culture of some yellow catfish mainly brings stable benefits, and the existing scale of aquaculture is still expanding.
3.4? Cage culture
In some river areas where the reservoir and water supply can be guaranteed, the yellow catfish can be cultured by hanging cages. The culture density can be higher, the special compound feed is put into the whole process, the diseases are few, the management is convenient, the investment in rent and electricity is reduced, the culture density is controlled to prevent the occurrence of hypoxia, and the benefits obtained by culture are more significant than those in ponds.
Pass 10? About 120~ 150 can be produced per square meter of cage culture in a month. Jin of fish (the same time as pond culture), the survival rate of seedlings is about 50%, 3~4cm? The survival rate of species of fish has reached more than 80%, and the density should be determined according to the seedling specifications.