Method for breeding one-year-old crabs in river crab families through large-scale enclosures in paddy field

Abstract

The invention relates to a method for breeding one-year-old crabs in river crab families through large-scale enclosures in a paddy field. The method is characterized in that enclosures are built in the paddy field, rice is planted in the enclosures, and crabs in one family are bred in each enclosure. The method has the benefits as follows: firstly, the crabs are bred in one paddy field in an enclosed manner, water in the enclosures is the same, water bodies are connected, and environment conditions are basically the same; secondly, the crabs are randomly put into different enclosures repeatedly, and accordingly, influence of environment differences is reduced; thirdly, the breeding success rate can be increased with a repeated enclosure method in different paddy fields; fourthly, the manufacturing cost of the enclosures is lower, operation is simple and convenient, and the scale can be enlarged more easily. Additionally, the method can be used for large-scale paddy field ecological experiments.

Description

technical field [0001] The invention relates to the technical field of aquatic breeding, in particular to the field of family breeding of river crabs, in particular to a method for cultivating first-year-old crab species of river crab families in large-scale enclosures in paddy fields. Background technique [0002] River crab is a kind of aquatic product loved by the masses. River crab farming is also a pillar branch of the aquaculture industry. It is a pillar industry in many areas to adjust the structure of agricultural industries, increase farmers' income, and build a harmonious society. With the in-depth development of the river crab farming industry, the demand for fine varieties of river crabs from farming enterprises and farmers is increasing day by day. This has just promoted the development of the selection and breeding of excellent varieties of river crabs. At present, the selection and breeding of river crabs is mainly based on family selection, or is improved on...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the cost of ponds is high, and the environmental differences between ponds are relatively large, which affects the evaluation of heritability among families and the selection process, and it is difficult to form a scale

There are also cage cultures, but river crabs are more destructive to the cages, especially in the breeding stage of first-year-old crab species, and it is more difficult to prevent the cages from escaping.

There is also a method of using fluorescent markers for mixed breeding to overcome the defects of large environmental differences, but the characteristics of the shelling and growth of river crabs make the final recognition of fluorescent markers very low, which is not conducive to large-scale development.