A kind of cultivation method of crayfish

Abstract

The invention provides a crayfish culture method, which belongs to the field of aquaculture, including pretreatment of culture ponds, cultivation of hydroponic algae, seedling feeding and management, feed feeding, and water body purification, wherein the purifying agent used for water body purification includes EM biological bacteria agent and Composite flocculant, the above-mentioned composite flocculant is a polymer formed by β-cyclodextrin as a matrix, and a cross-linking agent is catalyzed to undergo esterification and cross-linking reaction, and the cross-linking agent used includes citric acid, hydroxybenzoic acid and 2- Hydroxypropionic acid. The method for cultivating crayfish provided by the invention has a benign breeding ecological environment, low cultivation cost, good water quality purification, high survival rate and output of crayfish; the feed used in the method is excellent in edibility and palatability, and the production rate and product purity are excellent. High; the specific surface area of ​​the composite flocculant used is relatively large, the cavity structure capacity and adsorption capacity are high, the expansion coefficient is low, the water area is wide, the water purification effect is excellent, the breeding environment is improved, and the survival rate is conducive to improving the economic benefits of breeding.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a method for cultivating crayfish. Background technique [0002] Crayfish, whose scientific name is Procambarus clarkii, belongs to the phylum Arthrozoa, the class Crustacea, and the genus Procambarus. Its meat is delicious and nutritious, and it is deeply loved by people. It is the main species of shrimp breeding at present. Crayfish is an alien species, native to the southern United States and northern Mexico. It was introduced from Japan to Nanjing, China in the 1930s. [0003] Later, due to natural transmission and artificial breeding, it gradually expanded to all parts of the country, and its main production areas are the middle and lower reaches of the Yangtze River such as Hubei, Jiangsu, and Anhui. Crayfish has now become a species in China's natural water bodies, and in some areas it has even formed a dominant population. Crayfish has a wide range of adaptabilit...

AI Technical Summary

Problems solved by technology

my country's water bodies are seriously polluted by heavy metals. The heavy metals zinc, lead, cadmium and mercury in some water body sediments exceed the standard by more than 150 times, and crayfish themselves have a strong ability to enrich heavy metals, resulting in a large number of bacteria in the cultured crayfish , parasites, antibiotics, hormones and heavy metals, which do not meet the healthy eating standards, and the meat quality and taste of crayfish are greatly affected. If the water environment of crayfish breeding is strictly controlled, on the one hand, it will cost a lot, and on the other hand, it will prolong the life of the crayfish. Crayfish growth cycle, increased mortality, resulting in slower accumulation of crayfish meat