A method for constructing a full-sib family of pompano ovata

Abstract

The invention provides a method for constructing a full-sib family of pomfret oval, comprising the following steps: (1) selection and cultivation of broodstock: selecting broodstock of oval pomfret, marking the broodstock with electronic markers, and carrying out nutritional strengthening; ( 2) Oxygenization and external markers of broodstock: After the gonads of broodstock are mature, use oxytocic agent to artificially induce broodstock, use external markers to identify individual broodstock, and record the corresponding electronic marker number; (3) Observation and selection of broodstock: observe after injecting oxytocic agent Mating behavior of broodstock: Determine a pair of broodstock according to the mating behavior of broodstock, record the electronic tag number and corresponding external tag of the paired broodstock, and select the paired broodstock to be cultivated separately; (4) Obtain fertilized eggs and raise seedlings: Fertilized eggs were collected after the eggs were collected, and seedlings were cultivated to obtain a full-sibling family of ovate pomfret. The method of the invention can effectively solve the problem that it is difficult to distinguish the male and female broodstock of the oval pomfret and cannot effectively carry out family selection and breeding.

Description

technical field [0001] The invention relates to the technical field of breeding of ovate pomfret, in particular to a method for constructing a full-sib family of ovate pomfret. Background technique [0002] Family selection is one of the main means of breeding aquatic animals with excellent growth traits. In the world, large-scale family selection technology has been used to genetically improve aquaculture animals, and significant progress has been made. Norway used large-scale family selection technology to genetically improve Atlantic salmon and successfully bred high-quality Atlantic salmon strains, effectively avoiding the decline in economic traits during the breeding process, and economic traits have also been continuously improved. In addition, the large-scale family breeding technology was used to carry out the breeding of Indian carp, tilapia and rainbow trout, all of which achieved good breeding results. [0003] The pomfret (Trachinotus ovatus) is the main specie...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for constructing a family of full-sibling pomfrets, which solves the technical problems in the prior art that the male and female of the pomfrets are difficult to distinguish and the accuracy of family identification is insufficient.