A method for cultivating improved disease-resistant fish species based on genome-wide selection

Abstract

The invention aims at providing a whole-genome-selection-based method for breeding improved disease-resistant fish varieties, thereby overcoming defects in the traditional breeding technology, providing a molecular breeding method for cultivation of improved disease-resistant high-yield fish varieties, solving a problem of lack of a whole-genome selection method in the existing fish breeding industry, providing a technical means for improved disease-resistant fish variety breeding of the fish breeding industry, realizing upgrading of the fish breeding technique, and promoting rapid development of the fish breeding industry. The disease-resistant fish offspring obtained by using the method provided by the invention has the enhanced disease-resistant capability. An experiment result demonstrates that the survival rate from infection and breeding survival rate of a disease-resistant fish offspring that is bred based on the whole genome selection method are higher than those of the control group by 20% to 30%. Using the method provided by the invention, the improved disease-resistant fish breed can be bred rapidly and efficiently; and the disease-resistant capability and breeding survival rate of fish can be enhanced. Therefore, the method provided by the invention has the great application value and broad promotion prospects in the fish breeding industry.

Description

technical field [0001] The invention belongs to the technical field of aquatic genetics and breeding, and in particular relates to a method for cultivating improved disease-resistant fish species based on whole genome selection. Background technique [0002] Fish farming is the pillar industry of my country's aquaculture industry. In 2014, the fish farming output was 27.2194 million tons, accounting for 57.3% of the entire aquaculture output. Farmed fish is an important source of food protein in my country. [0003] However, with the rapid development of the fish farming industry, the lack of good varieties and the degradation of the germplasm of the cultured species are prominent; the expansion of the breeding scale, the improvement of the degree of intensification and the deterioration of the breeding environment have caused frequent occurrence of aquaculture diseases, and the aquaculture products Problems such as outstanding drug residues seriously restrict the sustainab...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to establish a method for cultivating fish disease-resistant improved varieties based on whole genome selection, to make up for the shortcomings of traditional breeding techniques, to provide molecular breeding methods for fish disease-resistant, high-yield, and high-quality improved varieties, and to solve the lack of comprehensive genetic information in the fish farming industry. The problem of genome selection method provides the technical means of breeding disease-resistant and excellent varieties for the fish farming industry, realizes the upgrading of fish breeding technology, and promotes the rapid development of the fish seed industry

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