Method for breeding blue-lower-leg spotted-brown-feather laying hens with high egg yields

Abstract

The invention discloses a method for breeding blue-lower-leg spotted-brown-feather laying hens with high egg yields. The method comprises the following steps of: artificially inseminating and mating a large quantity of Huainan spotted-brown cocks serving as male parents and Loman laying hens serving as female parents, collecting hatching eggs and hatching an F1 generation; identifying cocks and hens according to the colors of feathers and lower legs, eliminating white-feather yellow-lower-leg chicken which are cocks, reserving spotted-brown-feather blue-lower-leg chicken which are hens for serving as breeding hens, and performing back crossing by taking Huainan spotted-brown cocks as male parents to produce an F2 spotted-brown-feather generation; crossly mating and fixing the F2 generation and performing family breeding to produce an F3 generation; and performing gradual pure breeding on the F3 generation and later generations and obtaining the blue-lower-leg spotted-brown-feather laying hens with high egg yields according to egg yield, protein, lower leg color, feather color and bodily form, wherein the feathers are spotted-brown feathers; and the bodily form refers to delicate and pretty bodily form, blue lower leg and blue beak. According to the method, an appropriate high-egg-yield gene is introduced into a local chicken breed, and the proteins and macroscopic features of the local chicken breed are kept simultaneously.

Description

technical field [0001] The invention relates to a method for cultivating chickens, in particular to a method for cultivating chickens with high egg production of green shanks and ephedra feather eggs. Background technique [0002] For a long time, most of the breeds of high-yield laying hens used in my country's laying hen farming industry have relied on imports. Their egg production is high, and the egg production in 72 weeks has reached more than 300 pieces. However, the eggs (commonly known as "foreign eggs") are of ordinary quality and taste Not good, and the meat quality of the culled hens is average, and the price is not high. The egg production of local chicken breeds in my country is generally low, and the annual egg production of a biological egg is about 120-150 pieces, but the eggs produced (commonly known as "native eggs") are rich in flavor, high in quality, delicate in taste, and more in line with The aesthetics of the Chinese people, the price is high; the hens...

AI Technical Summary

Problems solved by technology

However, this method has the following disadvantages: 1. Due to the lack of further selection of the female parent, the progress of breeding for target traits is limited; 2. The commercial laying hens are large in size and consume a lot of feed, resulting in high feeding costs; 3. Egg quality is poor Poor uniformity, large differences in eggshell color, egg weight, etc., which cannot meet the standards of native eggs; 4. The appearance difference between culled hens and native chickens is obvious, and the price is not high

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