The varieties of green shell laying hens with an annual output of 300 are Sanhuang green shell laying hens, Dongxiang Kuroha green shell laying hens, Sanyi green shell laying hens, Chang green shell laying hens, Zhaobao green shell laying hens and Xinyang green shell laying hens. 1, Sanhuang green shell laying hens: bred by Jiangsu Poultry Research Institute. There are two strains, Huangyu and Kuroha, whose consanguinity comes from local varieties in China. 2. Dongxiang Kuroha Green Shell Laying Hen: It was bred by Jiangxi dongxiang county Institute of Agricultural Sciences and Jiangxi Academy of Agricultural Sciences Animal Husbandry Institute. Small size, high egg-laying performance, strong adaptability and all black feathers.

One, three yellow green shell laying hens

1 This variety was bred by Jiangsu Poultry Research Institute (now Poultry Research Institute of China Academy of Agricultural Sciences), and there are mainly two strains: Huangyu and Kuroha.

2. Its blood origin comes from local varieties in China, with single crown, yellow beak, yellow legs and red ears.

3. The age of parturition is 155- 160 days, the weight of parturition is 1.25 kg for hens and 1.5 kg for roosters.

Second, Dongxiang Kuroha green shell laying hens

1, this variety is cultivated by dongxiang county Agricultural Institute of Jiangxi Province and Animal Husbandry Institute of Jiangxi Agricultural Academy. It is small in size, has high egg laying performance and strong adaptability. Its feathers are all black, black skin, black bones, black meat and black viscera, and its beak and toes are all black.

2. The hen's feathers are compact, with a single crown upright, 5-6 crown teeth, big eyes, light green ears, deep and thin meat and flaky feathers.

Three, three beneficial green shell laying hens

1, this variety is bred by crossing of donghu district Sanyi Poultry Breeding Co., Ltd., and its latest mating combination is Dongxiang Kuroha green-shell layer cock as the male parent, and imported pink-shell layer as the female parent, and it is mated.

2. Ma Yu, Huang Yu and Kuroha account for 1/3 in the commercial chicken flocks, and the fast and slow feather identification method can be used for sex identification.

Fourth, Chang's green shell laying hens

1, this breed is native to Nanchang County, Jiangxi Province, and the chicken breed is short in size and compact in feathers.

2. The color of the chickens without breeding is messy, which can be roughly divided into four types: white feather type, Kuroha type (all the feathers except the red feather ring on the neck will be black), hemp feather type (hemp color mainly includes hemp and hemp) and yellow feather type (with yellow skin and yellow feet at the same time).

Five, Zhaobao green shell laying hens

1, this breed was bred by Minxi Zhaobao Rare Poultry Development Company, Leizhen Town, Yongding County, Fujian Province, and the blood origin of this breed is similar to that of Dongxiang green shell laying hens in Jiangxi Province.

2. The hen's feathers are black, with black skin, black meat, black bone and black crown. The age of laying is late, which is 165- 170 days, and the laying weight is 1.05 kg.

Six, poplar green shell laying hens

1, the hen feathers of this breed are white, but most chickens have black spots, single crown, most of the crown and ear leaves are red, and a few are black.

2. About 60% hens have green feet and beaks, and the rest have yellow feet and beaks.

3. The age of first laying is 140 days (the laying rate is 5%), and the age of laying rate reaches 50% is 162 days.