China is a big country in layer breeding, and since 1985, the annual output of eggs ranked first in the world, and has been firmly at the top of the list. At present, the annual stock of layer chickens is not less than 1.3 billion, and egg production accounts for about 40% of the world. In the "National Inventory of Breeds of Livestock and Poultry Genetic Resources (2021 Edition)" released by relevant departments at the beginning of the year, there are a total of 240 selected chicken breeds, many of which are egg breeds. Although they are all egg types, the egg production of different chicken breeds also varies greatly. The following is a detailed introduction to several excellent breeds of layer chickens that have leading market influence.
1. Roman pink layer chicken. Introduced as a matching line, native to Germany, belongs to the powder-shelled layer chicken, the average number of eggs produced per chicken at 72 weeks old is 295-305 pieces.
2. Big Afternoon Noodle No. 1 Layer Chicken. Breeding supporting line, Chinese breed, belongs to the powder shell layer chicken, the average number of eggs produced by each chicken at 72 weeks of age is 290-300 pieces.
3. Roman brown layer chicken. Introduced as a companion system, native to Germany, belongs to brown shell layer chickens, the average number of eggs produced per chicken at 72 weeks of age is 315-330.
4. Highland brown layer chicken. Introduced the supporting line, native to the United States, belongs to the brown shell layer chicken, the average number of eggs produced by each chicken at 72 weeks of age is 318-329.
5. Nongda No. 3 dwarf small layer chicken. Breeding supporting line, Chinese breed, belongs to brown shell layer chickens, the average number of eggs produced by each chicken at 72 weeks of age is 288-293.
6, Highland white W36 layer chicken. Introduced the supporting line, native to the United States, belongs to the white shell layer chicken, the average number of eggs produced per chicken at 72 weeks of age is 300-310.
7, Jingbai 938 layer chicken. Breeding supporting line, Chinese breed, belongs to the white shell layer chicken, the average number of eggs produced by each chicken at 72 weeks of age is 290-310.
Overall, the egg production of egg-type local varieties is significantly lower than that of the introduced supporting lines and domestic breeding supporting lines. In addition, although the market share of excellent breeds of laying hens at home and abroad is two points, the production performance of excellent varieties abroad is still slightly stronger than that of domestic varieties.