Jingyang Chicken is a large-scale meat-type local variety. It is a rare domestic meat-type local variety resource, commonly known as “Jiujin Chicken” or “Jingyang Jiujin Chicken”. According to the "Jianshi County Place Names", it is recorded that "Jingyang chicken is a large individual and a good meat quality is a famous local variety in the province." Because it is mainly produced in the Jingyang River (the middle reaches of the Qingjiang River) in Jianshi County, Hubei Province, it was named Jingyang Chicken. It has nourishing health care function and is a rare domestic meat-type local variety resource.

Jingyang Chicken is commonly known as Jingyang Jiujin Chicken. It is a dual-use local variety. The origin and central production area is Jingyang Town, Jianshi County, Hubei Province. The adjacent Huaping Township and Guandian Town are also distributed. 1 Variety Sources and Changes 1.1 Variety Formation According to the research, since the eight days of Ming Wanli (1580), the Italian priest Ricci came to China to spread Christianity. After the Belgian missionaries built the Catholic Church on the north bank of the Jingyang River (Dashutun Village), they successively From Europe, chicken breeds are raised locally. These exotic chickens are large in size, fast in growth, and good in meat quality. Therefore, farmers use local chickens to breed and multiply, and after long-term natural selection and artificial breeding, they form today. Jingyang chicken. 1.2 Number of Groups The number of Jingyang chickens in Jianshi County was about 620,000 in 1985, about 720,000 in 1995, about 860,000 in 2005, and about 510,000 in 2006. 2 Variety characteristics and performance 2.1 Body appearance Jingyang chicken legs are tall, strong, big head, single crown, crown teeth 7-9, crown color is black and red. The iridescent color is golden yellow. The ear leaves are mostly green and a few are white.胫 is black. There are two types of feather color: brown hemp and jute. The brown feathered chicken neck feather, main wing feather, and main tail feather are black, the back feather, belly feather, and saddle feather are light brown color, and the rest are brown hemp. The neck feather, main wing feather and main tail feather of the jute feather cock are black, the back feather, belly feather, saddle feather and other parts are jute, and the hen is plume. The cock is large, erect, and the meat is large. The hen's crown is biased to one side. The chick fluff is mainly yellow with a small amount of gray velvet and black velvet on the back. 2.2 Reproductive performance According to the statistics of the breeding grounds of Jingyang Chicken, Jingyang chickens were started on average 175 days old, with an annual output of 145 eggs, up to 176 eggs, with an average egg weight of 56 g. The fertilization rate of the eggs was 91.2%, and the hatching rate of the fertilized eggs was 95.5%. The nest rate of hens is about 20%. 3 Variety protection and research and utilization 3.1 Seed conservation methods Protected areas and protected farms are used. The Jingyang chicken original seed farm undertakes the task of preserving the species, and there are about 3,000 chickens in the core group. Jingyang Chicken was included in the “Hubei Livestock and Poultry Breeds” in 2004 and was certified by the National Animal Genetic Resources Committee in 2009. 3.2 Breeding and utilizing Jingyang chicken original seed field In the original production area of ​​Jingyang chicken, about 5,000 breeders with obvious appearance characteristics and good individual growth and development were selected. After two generations of subculture, the group gradually purified in 2005. On the basis of this, a breeding group of more than 1,500 chickens of two types, brown hemp and jute, was established to improve their egg production performance and growth rate. 4 Variety evaluation Jingyang chicken has the advantages of large individual, resistance to rough feeding, wide adaptability, strong disease resistance, good reproductive performance, good meat quality and good egg quality. However, there is a shortcoming of slow growth in the early stage. In the future, the breeding of this variety should be strengthened to improve its early growth rate.

Jingyang chicken quality technical requirements (1) selection and matching. 1. Selection: millet, jute. The body is well developed, the body is strong, the body is tall and majestic, the chest is deep, the chest angle is wide, the cock is strong, the hen has good egg laying performance, and the nesting weak individual is used as the breeder. Breeding of chickens is selected through the stages of nascent, 60-day-old, 90-day-old, 120-day-old, and 180-day-old. 2. Optional: The selection adopts the principle of homogenous matching, natural mating, matching 1:10 with male and female, and 1:40 for artificial insemination. (2) Feeding management. 1. Brooding period: (1) Temperature requirement: The temperature is controlled from 33 ° C to 35 ° C in 1 week, and then decreased by 1 ° C to 2 ° C per week. (2) Humidity requirements: The relative humidity in the brooding room is controlled at 55% to 60%. (3) Feeding density: Within 30 weeks before 4 weeks of age, the stocking density per square meter is less than 30, and the stocking density per square meter is 5 or less at 5 to 7 weeks of age. (4) Illumination: 23 to 24 hours of light per day at 1 week of age, and gradually reduce the illumination time to natural light after 1 week of age. (5) Drinking water: The chicks are supplied with warm water within 1 week. The water temperature is consistent with the room temperature, and the water is kept adequate and clean. (6) Dietary standards: dietary energy of 12 MJ/kg, crude protein 20% calcium 0.9%, phosphorus 0.65%, and salt 0.3%. (7) Feeding methods: the ground litter is raised or raised on the Internet. (8) Epidemic prevention procedures: 7-day-old chicken Newcastle disease (drip nose), 12-day-old transmission (drip nose), 25-day-old chicken Newcastle disease (prickle), 32-day-old avian influenza (skin injection). 2. Breeding period: (1) Feeding method: combination of grazing and feeding. The grazing stocking density is preferably 8 to 10 per 100 square meters. Cage or ground leveling density is 10 per square meter at 6 to 12 weeks of age, and 8 per square meter at 13 to 20 weeks of age. (2) Drinking water: Take free drinking water and keep it clean. (3) Diet: The combination of natural feed and full-price diet. Dietary standard: The diet with pre-culture had a metabolic energy of 11.2 MJ/kg, crude protein 17%, calcium 0.8%, phosphorus 0.65%, and salt 0.31%. In the late growth period, the diet contained 12 MJ/kg of metabolizable energy, 15% crude protein, 0.9% calcium, 0.65% phosphorus, and 0.32% salt. (4) Feeding management: stocking is mainly based on free feed, supplemented by a small amount of raw grain (corn, wheat, rice, etc.), and the captive is mainly based on full-price feed, and appropriate feeding of green feed. (5) Chicken house: good ventilation, warm in winter and cool in summer. (6) Illumination: Use natural lighting. (7) Out of range: 120 to 180 days old. 3. Environmental and safety requirements: The prevention and control of breeding environment and epidemic diseases must comply with relevant state regulations and must not pollute the environment. (3) Quality characteristics. 1. Appearance features: It has the characteristics of “red crown, green ear, black skin, black legs, and large size”. 2. Characteristics of the corpus callosum: the skin is black, the muscles are red, the periosteum is light, the cut surface is shiny; the muscles are elastic, and the depressed parts immediately return to the original position after the finger pressure. It has the normal smell of chicken and has no odor. 3. Physical and chemical indicators: market weight: 1.5kg to 2.5kg for cocks; 1.2kg to 2.0kg for hens.胴 Weight: cock 1.1kg to 1.8kg; hen 0.8kg to 1.5kg. Protein ≥ 20.5%, intermuscular fat ≥ 4%, total amino acid ≥ 20%, selenium ≥ 1.0 mg / kg. 4. Safety requirements: Product safety indicators must meet the relevant regulations of the state for similar products.

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Producers within the scope of protection of Jingyang Chicken Geographical Indication Products may apply to the Jianshi County Quality and Technical Supervision Bureau of Hubei Province for the use of the “Special Mark for Geographical Indication Products”, which shall be reviewed by the Hubei Provincial Bureau of Quality and Technical Supervision and announced by the General Administration of Quality Supervision, Inspection and Quarantine. Approved. The legal inspection agency of Jingyang Chicken is designated by the Hubei Provincial Bureau of Quality and Technical Supervision.