Implementation method and system for large-scale directed mating of red claw crayfishes

Abstract

The invention belongs to the technical field of genetic breeding of crayfishes, and discloses an implementation method and system for large-scale directed mating of red claw crayfishes. Under the condition that the source and genetic background of a breeding population are unknown, directed mating group design is scientifically and efficiently completed by means of molecular marker information, sothat a certain genetic diversity of the population can be maintained while inbreeding is avoided. According to the implementation method and system, a filter device and a conical collector are employed to realize automatic collection of pollutants generated during aquaculture, and semi-automatic sewage discharge is realized by combining with a timing valve, and compared with a way of manual siphon sewage discharge, the semi-automatic sewage discharge saves manual labor, thoroughly discharges sewage, and reduces water consumption for sewage discharge; a main water inlet valve is used in coordination with independent float level switches of aquaculture tanks, thus realizing accuracy and automation of adding water into aquaculture tanks in batches; and installation of overflow ports guarantees that the water in the aquaculture tanks cannot be excessive, so that not only is water saved but also manual labor of a water adding link is saved, and standardization and convenience of the implementation link of large-scale directed mating of the red claw crayfishes are realized.

Description

technical field [0001] The invention belongs to the technical field of crayfish genetics and breeding, and in particular relates to a method and system for large-scale directional mating of red crayfish. Background technique [0002] At present, red claw crayfish is one of the best freshwater shrimps in the world. It has the characteristics of large size, fast growth and high meat yield. As an introduced species, there is no effective breeding program for red crayfish in China. Most of them adopt the method of free breeding within the existing population resources, and there are different degrees of inbreeding problems. In order to meet the sustainable seedling and breeding needs of redclaw crayfish in my country, it is necessary to carry out breeding projects based on family selection, improve the selection response of important economic traits, and achieve the goal of maximizing the use of introduced germplasm resources. In the process of large-scale family selection of r...

AI Technical Summary

Problems solved by technology

In fact, even a medium-scale family breeding will involve hundreds of families, and there will be some operational problems in the process of implementing such a large-scale directional mating: (1) It is time-consuming and laborious to clean up the residual bait and feces every day. Uncleanness will lead to deterioration of the breeding environment; (2) There is a risk of cross-infection when cleaning residual bait and feces with public utensils between families; (3) Manual water changes for all containers are cumbersome and heavy workload

[0004] (1) In the existing directional mating process, it takes time and effort to clean up the residual bait and feces every day. If the cleaning is not clean, it will lead to the deterioration of the breeding environment

[0005] (2) In the existing directional mating process, there is a risk of cross-infection when households share utensils to clean up residual bait and feces

[0006] (3) The existing directional mating process has the problem of cumbersome manual water exchange in all containers and a large workload

[0008] When operating more than 100 mating groups, usually more than 3 skilled personnel need to be equipped, and it takes more than 3 hours to complete the daily sewage discharge and water change work, and the complete sewage discharge cannot be guaranteed. If there are public sewage discharge tools, once there are foreign pathogens, There is also a risk of cross infection

Generally speaking, manual sewage and water replacement requires a lot of human resources and time costs, and cannot achieve standardized operations. It is difficult to solve the above problems and defects.

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