1. Leghorn chicken, this is a relatively old breed of laying hens. It was the most popular standard breed in the 1970s. The standard weight of adult roosters is 2.7 kilograms, and hens are 2 kilograms. The eggshells are white. . Lively temperament, strong constitution, no nesting ability, early maturity, high egg production, tolerance to rough feeding, strong foraging ability, strong disease resistance, adaptable to free-range conditions. It produces about 200 eggs per year. However, you cannot buy inter-line hybrid commercial chickens produced by a combination of pure lines or inbred lines. Such chickens are not suitable for free-range breeding.

2. Xianju chicken is an excellent small egg-laying chicken breed in my country. It is lively and has strong foraging ability. Originating from Taizhou City in central Zhejiang Province near the East China Sea, adult roosters have yellow or red feathers and weigh about 1.5 kilograms. Hens have mostly yellow feathers, with few black or colorful ones, and weigh about 1 kilogram. The annual egg production is about 188-211 eggs. The eggshells are yellow-brown and each egg weighs about 46 grams.

3. Langshan chicken is an ancient chicken breed in my country that is used for both meat and eggs. It is native to Rudong County and Tongzhou City, Nantong City, Jiangsu Province. The average weight of adult roosters is 2.84 kg and hens are 2.28 kg. Langshan chickens are sexually mature at 7 months old and can produce 160 to 170 eggs per year.

4. Sichuan Mountain Silky Chicken is an excellent variety of ever-feathered Silky Chicken. The Sichuan mountainous silky chicken group has numerous appearance characteristics and high uniformity. It has the characteristics of black skin, black bones and black meat. The feathers are mainly black feathers, accounting for more than 60%. The average weight of male and female commercial chickens of the southern Sichuan type at 120 days is 1.65 kg. The proportion of black feathers of the southwestern Sichuan type is higher, accounting for 75%. The average weight of male and female commercial chickens at 120 days old is 1.93-2.25 kg. Kilogram, annual egg production is 100-120.