Yellow eel is one of the important freshwater economic fish in China, with delicate meat quality, delicious taste, high nutritional value and medicinal value. In recent years, with the improvement of people's living standards and the change of consumption concepts, the market demand for yellow eel has been growing, and the yellow eel breeding industry has also developed rapidly. In order to improve the efficiency of yellow eel farming, many farmers are constantly exploring new breeding methods and technologies. This article will introduce a new method of yellow eel cultivation - ecological farming.
First, the principle and characteristics of ecological farming.
Ecological breeding is a kind of breeding method that uses ecological principles to realize the organic combination of breeding environment and natural environment and improve breeding efficiency through reasonable breeding layout and management measures. Ecological breeding of yellow eel is to simulate the natural ecological environment of yellow eel in the breeding process, create suitable living conditions for it, and make full use of various ecological resources to improve breeding efficiency.
The ecological breeding of yellow eel has the following characteristics:
1.Environmental protection: Ecological farming follows the laws of nature and ecological balance, reduces pollution and damage to the environment, and conforms to the current environmental protection concept.
2.Efficient: Through reasonable breeding layout and management measures, the growth rate and breeding efficiency of yellow eel can be improved.
3.Sustainability: Ecological farming can make full use of various ecological resources, realize the sustainable use of resources, and ensure the sustainable development of the aquaculture industry.
Second, the key technology of ecological farming.
1.Selection and construction of breeding environment.
Choose a place with flat terrain, sufficient water source, good water quality and convenient transportation as the breeding site. In the construction of the breeding pond, the natural ecological environment of the yellow eel should be simulated, and the cement pond or the soil pond can be used, but the bottom of the pond is required to be flat, the silt is less, and the water depth is suitable. At the same time, suitable habitats and shelters are set up in the pond to provide good habitat and breeding conditions for the eel.
2.Seed selection and stocking.
Select seedlings with strong physique, neat specifications, and no disease and no injury for delivery. Before stocking, the seedlings should be disinfected to prevent the occurrence of diseases. According to the growth law and breeding density of yellow eel, the number and specification of seedlings are reasonably put in, and about 20-50 young eels can be put into each square meter. At the same time, in the process of breeding, according to the growth and density adjustment of yellow eel, timely pond division and thinning.
3.Feed selection and feeding.
Yellow eels are carnivorous fish and have high requirements for feed. When choosing feed, you should choose a feed that is nutritionally complete, high in protein and moderate in fat. According to the growth stage and feeding habits of the eel, the feeding time and amount should be reasonably arranged. Generally, young eels are fed 2-3 times a day, and adult eels are fed 1-2 times a day. When feeding feed, we should follow the principle of "four determinations", that is, timing, quantitative, qualitative and positioning, so as to improve the utilization rate of feed and reduce waste.
4.Water quality management.
Yellow eel has high requirements for water quality, and the water body should be replaced regularly during the breeding process to keep the water quality fresh. At the same time, water quality adjustment should be carried out in time according to the water quality situation, such as increasing oxygen, changing water and other measures. In the high temperature season and the vigorous growth period of yellow eel, the frequency of water exchange and water quality adjustment can be appropriately increased.
5.Day-to-day management.
Daily management is one of the important links of ecological farming. The growth, feeding, and water quality of the eel should be checked regularly, and problems should be dealt with in a timely manner. At the same time, do a good job in breeding records and statistics to provide a basis for the next breeding plan. In addition, it is also necessary to strengthen the patrol work of ponds to prevent the escape of yellow eels and the invasion of enemies.
6.Disease control.
Yellow eel disease prevention and control is one of the important links of ecological aquaculture. In the process of breeding, water quality management and feed management should be strengthened to enhance the disease resistance of yellow eel. At the same time, disinfection treatment and disease prevention and control work are carried out regularly.