Cage culture method for yellow-head catfishes

Abstract

The invention discloses a cage culture method for yellow-head catfishes. The method includes the steps of net cage arrangement, manufacturing of a feedstuff table, intensifying of seedlings, stocking,feedstuff preparation and culturing. The cage culture method has the advantages that the content of polyunsaturated fatty acid in bodies of intensified fairy shrimps is high, the fairy shrimps are suitable for the seedlings as open baits, under the seedling growth condition, the capacity of immunity, stress and bacteria and disease resistance is easily improved for larvae of the yellow-head catfishes, and the survival rate and the growth and development speed can be increased; with feedstuff, the defense function of an immunity system is enhanced for the yellow-head catfishes, the capacity ofdisease prevention and resistance is improved for organisms, stress and mutagenesis resistance and pathogenic bacterium infection restraining are improved for aquatic livestock, and the disease rateis decreased for the yellow-head catfishes; net cages are arranged in a pond to culture the yellow-head catfishes, an appropriate quantity of abalones, toadfishes and golden carps are cultured outsidethe net cages to adjust water quality, organic scraps and other biological resources in a water body are fully utilized, the fertility of water in the pond can be controlled, and eutrophication of the water in the pond can be prevented.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a cage culture method for yellow catfish. technical background [0002] Yellow catfish, commonly known as Gayu and Huanglatin, is a small economic fish widely distributed in fresh water bodies such as rivers, lakes, reservoirs, and ponds. Its meat is tender and thornless, delicious without scales, and rich in nutrition. It is very popular among consumers. It is a high-quality fish that has been sold well in the market in recent years. The annual market price is about 30-40 yuan per kilogram. The diet of the yellow catfish is a carnivorous omnivorous fish, and its foraging activities are generally carried out at night. The food includes small fish, shrimp, various terrestrial and aquatic insects, small molluscs and other aquatic invertebrates. Sometimes also prey on small fish. Its feeding habits vary with the environment and seasons, and it often devours the eggs of other fish in spr...

AI Technical Summary

Problems solved by technology

[0005] The Chinese invention patent of CN 106259128 A discloses a method for cultivating yellow catfish seedlings in a net cage. By setting a small net cage in a large net cage, bighead carp is raised in a large net cage, and yellow catfish is raised in a small net cage. It has the advantages of low breeding cost, short cycle, and high economic benefits, but its yellow catfish seedlings are put into cages without nutritional fortification, which will easily cause the seedlings not to adapt to the new environment, resulting in increased mortality of seedlings, and the cages Add yellow catfish fry, bighead carp, and channel catfish fry to the water at the same time. The three fish have different feeding habits but are fed with the same feed, which will easily lead to waste of feed, which may lead to eutrophication of the water body, and several fishes will compete for food. Phenomenon, not conducive to the growth of yellow catfish