Molecular breeding method based on polymorphism of candidate gene PRL (Prolactin)

Abstract

The invention provides a molecular breeding method based on the polymorphism of a candidate gene PRL (Prolactin) and relates to the technical field of poultry breading, in particular to a method for utilizing the polymorphism of the candidate gene PRL to perform molecular breeding. Under the condition of focusing on a gene effect of a PRL gene in a gonadal axis of a chicken, i.e. hypothalamus-hypophysis-ovary or testis tissue to reproductive characters of the chicken, mRNA differential expression or difference of translating proteins thereof, factors influencing the expression of the reproductive characters of the chicken are researched and a genetic molecular mechanism of the reproductive characters of the chicken is primarily illustrated, so that a function of the candidate gene during a reproductive developing process can be objectively understood, and meanwhile, the analysis to the influence thereof on a reproductive performance can be facilitated, a basis for marking auxiliary breeding can be provided, the improvement of the reproductive characters can be quickened and the potential economic benefit of the candidate gene can be utilized.

Description

technical field [0001] The invention relates to the technical field of chicken breeding, in particular to a method for molecular breeding using PRL candidate gene polymorphism. Background technique [0002] There are many varieties of local chicken in China, and the meat quality and flavor are excellent, which is recognized by the world. The production of high-quality broiler chickens with local chicken breeds as the main breeding materials or direct provenance has become a new economic growth point of my country's animal husbandry. The amount of high-quality broiler chickens in my country is increasing at a rate of 10%-20% every year. However, the shortcomings of local chicken breeds in my country such as low egg production and qualified eggs have become a bottleneck restricting the development of high-quality broiler industry to high efficiency. In many places in China, the annual egg production of high-quality chicken breeds is about 100, and the lowest is only about 70....

AI Technical Summary

Problems solved by technology

The amount of high-quality broiler chickens in my country is increasing at a rate of 10%-20% every year. However, the shortcomings of local chicken breeds in my