Breeding method of lake culture strain

Abstract

The invention discloses a breeding method of a lake culture strain, and belongs to the technical field of lake culture. The breeding method includes the steps: parent fish selection; breeding population selection; first-generation breeding; second-generation breeding; third-generation breeding; new strain determining and the like. According to the method, a new strain with relatively obvious growth advantages can be bred within a short time, and the method is applicable to four major Chinese carps, acipenseridae fishes and the like with long sexual maturity time. According to the method, breeding populations are selected before breeding, disadvantaged populations can be effectively removed, so that later breeding efficiency is effectively improved, diversity of biological genes at a cultivation stage is enriched to some extent, close breeding probability is reduced, the quality of finally cultured strains is improved, a water environment regulator is used, dissolved oxygen and nutrientelements in water can be increased, microorganism environments in the water are improved, so that the physique of bighead carps is improved, and the survival rate of the bighead carps is increased.

Description

technical field [0001] The invention relates to the technical field of lake culture, and more specifically, relates to a breeding method for lake culture strains. Background technique [0002] Lake aquaculture and freshwater aquaculture, freshwater aquaculture refers to the use of ponds, reservoirs, lakes, rivers and other inland waters (including brackish water) to raise and reproduce aquatic economic animals (fish, shrimp, crab, shellfish, etc.) and aquatic economic plants The production of fish is an important part of inland aquaculture. The fishes are mainly cultured, the shrimps cultured include Macrobrachium rosenbergii and Hainan prawns, and the crabs cultured are mainly river crabs. At present, China's freshwater aquaculture fish mainly include: herring, grass carp, silver carp, bighead carp, carp, crucian carp, bream, bream, dace, non-crucian carp and other economic fish. The area and output of freshwater aquaculture in China rank first in the world. [0003] Bre...

AI Technical Summary

Problems solved by technology

Although many fish genetics and breeding work have achieved remarkable results, fish such as the four major family carp and Chinese sturgeon have a relatively long time to sexual maturity, and the progress of genetic breeding work is very slow, and it will take decades for new species to emerge

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