Freshwater shrimp group composite breeding method

Abstract

The invention is applicable to the technical field of freshwater shrimp breeding, and provides a freshwater shrimp group composite breeding method. The breeding method comprises the following steps: selecting at least three freshwater shrimp populations in different areas or physical geography, and placing the freshwater shrimp populations in a domestication room for domestication and breeding toobtain a first parent; performing reciprocal cross on female parents and male parents of different varieties in the first parent to obtain first berried shrimps; then placing the first berried shrimpsin an incubation pool for incubation and birth of young shrimps, and performing cultivation until metamorphosis development is completed to obtain a first filial generation, and then performing growth condition measurement on the first filial generation; then selecting a plurality of groups of freshwater shrimps in different varieties from the first filial generation as second parents according to a measurement result of the growth condition of the first filial generation; and performing breeding according to the same method to obtain bred freshwater shrimps. The breeding method is simple andpractical, breeding materials are easy to obtain, integration and purification pertinence of the breeding method on target economic characters is high, the characters of the freshwater shrimps can bequickly improved, and the target economic characters are kept continuous and stable.

Description

technical field [0001] The invention belongs to the technical field of freshwater shrimp breeding, and in particular relates to a selective breeding method for freshwater shrimp population compounding. Background technique [0002] Green shrimp is extremely nutritious and suitable for all ages. The price has remained high. In Jiangsu, Zhejiang and other regions, green shrimp has become a luxury aquatic product, and the price is around 100 yuan per catty. [0003] At present, the artificial breeding of freshwater shrimp is in the ascendant, and the demand for improved species is also very urgent. The supply of good species of shrimp seedlings is in short supply, and it is difficult to buy. At present, excellent new varieties of freshwater shrimp have been bred. Because the growth and reproduction habits of freshwater shrimp are different from those of fish, they are fertilized in vitro, and the fertilized eggs will stick to the abdomen when the eggs are excreted. It takes a ...

AI Technical Summary

Problems solved by technology

But often in the actual application process, the fineness of freshwater shrimp is more likely to degrade than that of fish

The individual size and specification of the excellent shrimp seedlings bred in the same batch are quite different when they come out of the pond under the same growth conditions, that is, the individual coefficient of variation is high, which seriously affects the quality of the finished shrimp

This phenomenon is mainly caused by differences in genetic material. These differences can be traced to the selection of parents. Even if individuals with the same morphology are selected as parents, their genetic material will undergo greater differentiation and differences during the transmission of offspring. Therefore, it is difficult to effectively select only morphological traits when mating freshwater shrimp parents, and it also brings large errors to the evaluation of genetic parameters.

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