Selective breeding method for anti-rhabdovirus population of micropterus salmoides

Abstract

The invention discloses a selective breeding method for an anti-rhabdovirus population of micropterus salmoides. The method includes the steps of preparation of the disease-resistant population and selective breeding of the population with a production unit as a basis. Compared with the prior art, the method has the following advantages that the anti-rhabdovirus population can be selectively bredby means of the method, can be used as parent fishes for cultivating and breeding offspring fry and can be used as an excellent disease-resistant variety for breeding and popularization; the method adopts the technical approaches such as artificial infection and population selective breeding, a selective breeding technology of disease-resistant varieties of micropterus salmoides is preliminarily established, and micropterus salmoides with fast growth and excellent disease resistance is obtained; the method has the advantages of high pertinence and selective breeding efficiency, obvious effectsand the like, the survival rate of disease-resistant micropterus salmoide is 90% or above, and the growth rate of disease-resistant micropterus salmoide is increased by 20% or above.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and relates to a method for population selection, in particular to a method for selection of populations resistant to rhabdovirus disease of California perch. Background technique [0002] California perch is one of the species with the largest breeding area and wide distribution among the famous, special and high-quality aquaculture products in my country. It is loved by consumers because of its tender meat and delicious taste. In recent years, the production of perch farming in California has been increasing steadily, especially in Guangzhou and Zhejiang, and has developed to other regions. The breeding benefits are very high, and its market price has remained at 25-40 yuan per kilogram for a long time. At present, the annual output of California perch in my country is more than 160,000 tons, with an output value of about 4 billion yuan. While the rapid development of California perch has ...

AI Technical Summary

Problems solved by technology

In addition, the degradation of California perch germplasm resources has seriously affected the quality of California perch species, resulting in greatly reduced survival rates, disease resistance and environmental adaptability of perch species, resulting in slow growth, many diseases, long breeding cycles, Phenomena such as high bait coefficient and small size seriously restrict the sustainable and healthy development of my country's California perch industry

[0003] At present, the main diseases that harm fish are bacterial and viral diseases. Although traditional disease prevention measures such as antibiotics are currently taken, they still cannot fundamentally solve the disease problem of California sea bass

Moreover, antibiotics are easy to accumulate in fish, have potential hazards to the health of consumers, easily cause pathogenic bacteria to develop resistance, and seriously pollute the aquaculture environment. Therefore, their application in fish aquaculture is increasingly restricted.

At the same time, the use of antibiotics cannot meet people's growing demand for green aquatic products without drug residues.