Breeding method for rapid growth hypophthalmichthys molitrix and application of breeding method

Abstract

The invention belongs to the technical field of aquaculture breeding and in particular relates to a breeding method for rapid growth hypophthalmichthys molitrix and application of the breeding method.The breeding method comprises the following steps: selecting sexually mature male and female individuals of hypophthalmichthys molitrix which grows rapidly and large in size, breeding male individuals of Xingguo red hypophthalmichthys molitrix, and performing spawning induction; performing inheritance inactivation on sperms of the Xingguo red hypophthalmichthys molitrix, mixing the sperms with eggs of female hypophthalmichthys molitrix, and performing artificial insemination; performing gynogenesis treatment on zygotes after insemination; performing low-temperature shocking, and performing incubation at normal temperature so as to obtain fries; culturing a generation F1 till sexual maturity, performing secondary gynogenesis on female individuals which grow rapidly and good in body shapes,and breeding fries of a generation F2 according to families; performing mating and reproduction on female individuals and male individuals which grow rapidly and good in body shapes in the generationF2 so as to obtain fries of a generation F3, and constructing different pure lines of the families; performing culture, and performing growth comparison experiments on different pure lines, so as toobtain rapid growth hypophthalmichthys molitrix on the basis of the growth comparison experiments. The method is simple and feasible, and compared with a conventional breeding method, the method is capable of effectively shortening breeding cycles and is high in success rate.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a fast-growing silver carp breeding method and its application. Background technique [0002] Silver carp (Hypophthalmichthys molitrix), also known as silver carp, silver carp, etc., belongs to Osteostichthyes, Cyprinidae, Cyprinidae, Silver carp subfamily, Silver carp genus. Silver carp is naturally distributed in all major rivers and lakes in China except the western plateau. It is one of the most important freshwater breeding and farming fishes in China, and it is also one of the "four major carp" (generally referred to as herring, grass carp, silver carp and bighead carp) that are traditionally farmed. , has been cultivated in China for thousands of years. Silver carp has the characteristics of short food chain, easy breeding, low cost, water quality adjustment and easy processing. It mainly feeds on phytoplankton in the water body. It is a rare freshwater fi...

AI Technical Summary

Problems solved by technology

In addition, artificial breeding inbreeding, fish individuals tend to be miniaturized, germplasm is seriously degraded, diseases are increased, and stress resistance is weakened

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