A kind of method for cultivating crayfish in freshwater lake area

Abstract

The invention discloses a method for culturing crawfish in a freshwater lake district. A non-pollution or low-pollution calcium bicarbonate group type freshwater lake is taken as a culture zone, a two-step culture pond is built, the two-step culture pond is reasonably designed according to different growth conditions of crawfish, a hollowed-out bamboo woven mat net is put under the bottom of the culture pond and is taken as a base layer to cultivate base layer soil, lake water is introduced, algae and aquatic plants are planted in the base layer soil part through the lake water, the crawfish is introduced, protogenetic snail meat and clam meat in the lake district are taken as raw materials and compounded with commercially available feed for the crawfish for culturing of the crawfish. According to the method for culturing the crawfish, management is facilitated, the feeding cost is low, little land is occupied, the survival rate is high and the method is environmentally friendly and can facilitate large-scale and industrial culturing.

Description

technical field [0001] The invention relates to a crayfish culture technology in the field of aquaculture, in particular to a method for cultivating crayfish in a freshwater lake area. Background technique [0002] Freshwater lobster, scientific name Crayfish clarkii, also known as lobster, big lobster, and big red shrimp, belongs to the lobster family of the order Arthropods and Decapods. It is native to the United States and was introduced into my country from Japan during World War II. Widely distributed in the middle and lower reaches of the Yangtze River. Its shrimp meat is tender and tender, rich in nutrition, contains 8 kinds of amino acids necessary for human body, and has low fat content, and contains more tropomyosin and paramyosin. The nutritious food with high cholesterol and high protein is very popular among domestic consumers. The export volume is also increasing day by day. The sales and purchase prices are constantly rising. The prospects and benefits of bre...

AI Technical Summary

Problems solved by technology

The history of eating freshwater crayfish in my country began in the 1960s. In recent years, with the improvement of breeding technology, various farming methods have appeared one after another, such as small cement ponds, ponds, paddy fields, and greenhouses. Although these farming methods have improved The production of freshwater crayfish has been reduced, but because most of the water is artificially prepared, and there are too many chemicals used in the preparation of the water, the freshwater lobster contains antibiotics, hormones and other drugs, heavy metals exceed the standard, and even parasites and pathogenic bacteria exceed the standard. , pose a threat to people's health; in addition, there are many unreasonable and unscientific aspects of shrimp pond management. Under high-density conditions, it is easy for shrimps to cause casualties due to fighting with each other, affecting the size and yield of lobsters. And waste water resources, resulting in the reduction of economic benefits