Chang Dan Ke
Changshun green shell laying hens originated in Guyang Town, Changshun County, where the traffic is blocked, the terrain is steep and the geographical location is complex. The altitude is 660 ~ L 597.5 m, the annual maximum temperature is 32℃, the minimum temperature is l℃, the frost-free period is 288d, the sunshine hours are 1202h, and the annual rainfall is 1250 ~ 65438. There is Guyang River in the Hongshui River system in the Pearl River Basin, with a total length of 12.8km.
As early as the 1960s, in Ma Chang Village, Yanla Village and Du Ji Village of Guyang Town, people discovered that green-shell laying hens raised chickens and passed them down from generation to generation to cure colds. Therefore, green shell laying hens have been protected and propagated for a long time. According to rural customs, giving gifts to relatives, emigrating, green-shell eggs and green-shell laying hens also take root and develop in different places as gifts. In the 1980s, due to the serious plague, chickens raised by farmers were almost extinct, and only green-shell hens raised in remote villages living by mountains survived and were preserved. In the 1990s, although the development of green shell laying hens was slow, with the prevention and publicity of epidemic prevention departments, people knew something about plague and the number increased. At the end of 1990s, due to the great attention of the animal husbandry department, the application for conservation of green shell laying hens was launched, and it was implemented in 2000, with a total investment of 654.38 million yuan. More than 20,000 hemp feather, grey feather and Kuroha black-bone chicken were bred by purification and rejuvenation. Due to limited funds, this variety has not formed a scale, but it has improved the quality and quantity to a certain extent, further consolidating and strengthening the strain.
territorial scope
The regional protection scope of Changshun Green Shell Chicken is 17 townships, including Changzhai Town, Guang Shun Town, Daihua Town, Duncao Township, Guyang Town and Zhongba Township. Geographical coordinates are: east longitude1061'-10639', north latitude 25 38'-26'18', with a total area of 1543 square kilometers. The breeding scale of Changshun green-shell laying hens is 2 million, and the annual output of green-shell eggs reaches 80 million, with an output value of 65.438+0.6 billion yuan.
Product quality characteristics
External sensory characteristics: the eggshell is turquoise, oval-shaped, with an egg weight of 47-52g, a Hartmann unit of 80-85, and a thick protein, with a yolk ratio of 30-35% and an orange color. Intrinsic quality index: Changshun green shell eggs are delicious and rich in protein, amino acids and trace elements. Include protein 1 1- 13 (g/100g), glutamic acid 1.5-2.0 (g/100g) and taurine 0.08-0./. 100g), alanine 0.7-0.82(g/ 100g), calcium 620-650(mg/ 100g), iron 30-35(mg/ 100g), etc.