A method for breeding new strains of shellfish meat quality traits

Abstract

The invention discloses a method for breeding new strains of shellfish meat quality traits. Firstly, more than 20 full-sibling and / or half-sibling families are established, and each family is cultivated in different sea areas; Meat quality trait index determination and appearance index measurement are carried out in the family; the heritability of the meat quality trait index is screened out above 0.2, and the absolute value of the genetic correlation between the meat quality trait index and the appearance index is above 0.5; then according to A 20% screening rate screens out candidate parental families, and selects the best individuals in the candidate parental families according to the apparent traits as breeding parents; finally, according to the above breeding methods, carry out generation-by-generation selection, and finally form meat quality traits. of new strains. On the premise of not dissecting the research object, the present invention selects meat quality trait indicators from directly measurable apparent indicators through indirect breeding, using the method of combining family selection and intra-family selection.

Description

technical field [0001] The invention relates to a breeding method for new biological strains, in particular to a breeding method for new strains with meat quality traits of shellfish. Background technique [0002] Shellfish is an important economic species and pillar industry in my country's mariculture. It has the advantages of less investment, quick results, high economic benefits, and good ecological effects. However, at present, there is a lack of good species in shellfish farming, and it mainly relies on wild seedlings or wild (introduced) broodstock for reproduction. The offspring have poor meat quality, large individual differences, and weak stress resistance. The problems of disease and death are becoming more and more serious, and the breeding efficiency is low. Therefore, it is of great significance to cultivate new species (lines) of high-quality, high-yield and stress-resistant shellfish to improve breeding efficiency. [0003] With the continuous improvement of...

AI Technical Summary

Problems solved by technology

However, at present, there is a lack of good species in shellfish farming, and it mainly relies on wild seedlings or wild (introduced) broodstock for reproduction. The offspring have poor meat quality, large individual differences, and weak stress resistance. The problems of disease and death are becoming more and more serious, and the breeding efficiency is low.