Method for ecologically culturing high-quality red testis river crabs

Abstract

The invention discloses a method for ecologically culturing high-quality red testis river crabs, which fully utilizes natural conditions and resources of ponds, natural waters, rivers, reservoirs, lakes and wetlands, starts from biological, ecological and environmental mechanisms, follows the characteristics of respective econiches occupied by various organisms in biology, is based on biological characteristics of river crabs such as life habit, feeding habit, growth and development and the like, reasonably applies ecological balance breeding technology and nutrient balance technology, builds the best ecological environment of the culture of the river crabs, and meets the nutritional need of the growth and development of the river crabs to raise the high-quality 'red testis' river crabs. The ecological culture method comprises the following steps of: culture pond pretreatment, aquatic plant cultivation, shellfish transplantation, freshwater shrimp stocking, crab seedling stocking, siniperca chuatsi delivery, water quality control, bait feeding, and disease control. The method for culturing the river crabs can produce the high-quality and high-grade 'red testis' river crabs, can greatly improve the economic benefit of crab farmers, and can greatly improve the sustainable development of crab culture industry and the ecological benefit, the economic benefit and the social benefit of crab culture.

Description

technical field [0001] The invention relates to a method for cultivating aquatic products, in particular to a method for ecologically cultivating high-quality red oyster river crabs. Background technique [0002] River crab, the scientific name is Chinese mitten crab. River crab culture has a history of 100 years, due to the shortage of natural crab seedlings and the serious shortage of natural adult crabs. At present, a large number of artificially propagated crab larvae are used to cultivate adult crabs artificially in a large area and on a large scale in the breeding base. Large-scale artificial nursery and adult crab breeding brings a series of problems. For example, due to the mixed germplasm, especially the different characteristics and adaptability of the southern and northern crab species, the growth and development will be poor after mixing, and the produced crabs will be small and of poor quality, and they will become precocious and become small old crabs. And b...

AI Technical Summary

Problems solved by technology

And because of the poor ecological environment for raising crabs, such as the reduction of aquatic plants, the reproductive capacity of aquatic animals is small, the pH value of water and the dissolved oxygen are not adjusted properly, the palatable fresh animal protein bait is less, and the mature feed for converting plant protein into animal protein is insufficient. and other problems, the ecological environment cannot meet the normal growth and development needs of river crabs, resulting in commercial crabs becoming "white paste" river crabs with small specifications and poor meat quality

Also due to the poor ecological environment for breeding, there are frequent occurrences of diseases, especially the high incidence of river crab shivering disease and silk algae attachment disease.

To sum up, without improving the ecological breeding technology of river crabs, it is impossible to raise high-quality and high-grade "red paste" river crabs