High-yield freshwater crayfish culture method

Abstract

The invention discloses a high-yield freshwater crayfish culture method. The high-yield freshwater crayfish culture method comprises the following steps: (1) selecting a regular even-bottom pond, exposing the selected pond to the blazing sun for 204 days and performing pre-treatment; (2) selecting and throwing crayfish seeds which are healthy and strong, complete in appendage, free from diseases and injuries, strong in vitality and identical in size into the pond; (3) planting aquatic plants in the aquaculture pond, placing a plurality of facilities for crayfishes to inhabit or hide in the crayfish pond; (4) regularly, qualitatively and quantitatively performing feeding; and (5) fishing for the crayfishes in 6-7 months and 11-12 months in a centralized manner, or fishing for the big and remaining the small, wherein fishing can be performed throughout the year. According to the high-yield freshwater crayfish culture method, the pond, the seed throw-in quantity, the feeding quantity and time, the water quality, fishing and the like are reasonably controlled to greatly reduce harms of natural enemies, germs and the like to the crayfishes, the crayfish survival rate and growing speed are high, the yield is high, and further, economic benefits are improved. The cultivated crayfishes are delicate in meat and delicious in taste, has rich nutrition, including protein and the like, and is unique in flavor.

Description

[0001] 【Technical Field】 [0002] The invention relates to the technical field of aquaculture, in particular to a high-yield freshwater crayfish breeding method. [0003] 【Background technique】 [0004] Freshwater crayfish is a freshwater economic shrimp. It is widely welcomed by people because of its delicious meat. It has formed an absolute competitive advantage in the local ecological environment due to its omnivorous nature, fast growth rate, and strong adaptability. In recent years, it has become an important economy in China. For the cultured species, due to the strong tolerance of crayfish to the polluted environment, in order to save breeding costs, most farmers do not pay attention to the crayfish breeding environment. At present, the water body in China is seriously polluted by heavy metals. Zinc, lead, cadmium, mercury, etc. exceed the standard by more than 150 times, and the crayfish itself has a strong ability to accumulate heavy metals, resulting in a large number of ba...

AI Technical Summary

Problems solved by technology

[0004] Freshwater crayfish is a kind of freshwater economical shrimp. It is widely welcomed by people because of its delicious meat. Because of its omnivorous nature, fast growth speed and strong adaptability, it has formed an absolute competitive advantage in the local ecological environment. In recent years, it has become an important economic Crayfish are aquaculture species. Since crayfish have a strong tolerance to polluted environments, in order to save farming costs, most farmers do not pay much attention to the aquaculture environment of crayfish. At present, my country's water bodies are seriously polluted by heavy metals, and some water bodies have heavy metals in the sediment Zinc, lead, cadmium and mercury exceed the standard by more than 150 times, and the crayfish itself has a strong ability to accumulate heavy metals, resulting in a large number of bacteria, parasites and heavy metals in the cultured crayfish, which do not meet the healthy food standards , and if the water environment for crayfish breeding is strictly controlled, on the one hand, it will require a large cost, and on the other hand, it will prolong the growth cycle of crayfish, resulting in slower accumulation of crayfish meat