“Luodai Black Pig” refers to the traditional pig in the area of ​​Shuangjiang, Jinjing and adjacent Pingjiang County in Changsha County. It originated from Shuangjiang Town, Changsha County. It is one of the fine local pig breeds in Hunan Province because of its pure black color and Shuangjiang's original name “Luodai”. It is also a famous local pig brand in Changsha County. . "Roday Black Pig" has excellent varieties, fresh and tender meat, rich in nutrients, and contains more than 40 kinds of nutrients required by the human body such as potassium, calcium, sodium, copper, magnesium and zinc. In the Ming and Qing Dynasties, "Luodai Black Pig" was a tribute to the court. In 2006, together with Ningxiang Tuhua Pig, it was included in the first batch of national-level livestock and poultry genetic resources protection varieties.

"The dark clouds cover the top, the four feet are snowing" is the common name of the local people for the Luodai black pig. Its body coat is grayish black, the skin is pink, and the lower ends of the limbs are white. The fleshy marble is rich in flesh, the flesh is bright red, the stripes are clear, the muscles are rich in fat, and the fat and thin are coordinated. The formation of unique qualities stems from the beautiful Changsha County. "Book of Rites" has a cloud: eating men and women, people want to save. Those who have the attributes of life are not just eating. Through routine breeding work such as performance measurement, slaughter test, and meat quality measurement. It has been determined that Luodai black pig has rich flavor amino acid content of 62.70%, especially aspartic acid content of 8.03%, which is 2-3 percentage points higher than that of other pigs outside the province, and the Zn content is 16.01 mg. The content of .kg-1 is higher than that of pigs in other places, and the results show that Daweizi pig has unique characteristics such as excellent carcass traits, high muscle nutritional value, rich flavor amino acids and high zinc content. Hunan Tianfu Ecological Agriculture Co., Ltd., located in Shuangjiang Town, Changsha County, is committed to the development of Changsha County's local brand “Luodai” black pig industry, starting from germplasm resources conservation, breeding, breeding, promotion, slaughtering and processing, and sales. The policy of ecological farming, standardized production, refined management and brand management will create a complete and high value-added Luodai black pig industrial chain. Under the leadership of Chairman Liu Qi, through continuous efforts, the company has become a leading enterprise in agricultural industrialization in Hunan Province. Luodai Black Pig was approved as a pollution-free agricultural product by the Ministry of Agriculture and won the Gold Medal of the Central China Agricultural Fair. Its “Luodai” trademark was awarded the famous trademark of Hunan Province. In 2013, “Roday Black Pig” was awarded the national geographical indication product protection. In 2014, it was included in the “National Livestock and Poultry Resources Variety Protection List” by the Ministry of Agriculture. In 2015, it was awarded the “National Daweizi Pig Breeding Farm” by the Ministry of Agriculture. The company cooperated with the Hunan Provincial Animal Husbandry and Veterinary Research Institute to formulate the “Technical Regulations for the Feeding of Luodai Black Pigs”, and implemented the recycling measures for the fertilization of pig manure to ensure the ecological environment protection of Luodai black pigs. The company, jointly with the Hunan Provincial Animal Husbandry and Veterinary Research Institute, won the third prize of the 2015 Changsha Science and Technology Progress Award for the project “Research and Demonstration of Endangered Pig Breeding Pigs and Industry Supporting Technology”. The company adheres to the purpose of product variety protection, highlighting the brand market orientation, technology support, quality and safety traceability, and making full use of the modern Internet and e-commerce platform to build a safe, efficient and sustainable development of Luodai black pig modern agricultural industrialization according to the overall strategic objectives. The system ensures that the Luodai black pig industry will be bigger, stronger and more distinctive. In order to save and protect the Luodai black pig, through the company's own development and the government's support and supervision of Luodai black pig, the company has now built a national resource conservation field of 6,000 square meters, and established a population capacity of 5,000. The core population of the reserve, the non-intimate breeding system of the finite-locked group was created, and the conservation effect of the infinite group was obtained by the limited group, making Hunan Tianfu Ecological Agriculture Co., Ltd. the largest and domestic leading quality meat supplier in the province. Black pigs have become a model for agricultural industrialization in our county.

Luodai black pig quality technical requirements First, the variety Daweizi pig. Second, the conditions of production Hilly terrain, natural vegetation consists of Pinus massoniana, cedar, Camellia, bamboo, shrubs, etc., the mountain stream of the Laodao River system is the main source of drinking water. Third, feeding management Feeding methods: concentrated feeding and farmer's free-range combination. 2. 3. Feed conditions: Based on local rice and rice bran, add a small amount of soy products, supplemented with green feed such as radish, cabbage and sweet potato vine. 4. Feeding management points: (1) Weaning: 60 days of weaning, boars that are not used for breeding. (2) Pre-fertilization period (before 50kg): Feeding 3 times a day, mainly cooked food, supplemented with concentrate. (3) Late fattening: Feeding 3 times a day, cooked food supplemented with concentrate and green material to ensure outdoor stocking time. (4) Prohibited requirements: Any pharmaceutical additives are banned in the whole period. The use of therapeutic drugs strictly complies with relevant standards and regulations. 5. The standard for the production is about 8 months old and the living weight is about 65kg to 75kg. 6. Environmental and safety requirements: The prevention and control of the breeding environment and epidemic diseases must comply with relevant state regulations and must not pollute the environment. Fourth, slaughtering and processing Pig source standards: healthy pigs from the production area that meet the quality requirements of the living body. 2. 3. Hot hair: The scalding water temperature is 58 ° C to 63 ° C, and the scalding time is 8 minutes to 12 minutes. 4. Cooling and fresh-keeping: After washing the carcass with water within 1 hour after slaughter, it is acid-discharged for 24 hours at 0 °C to 4 °C. Five, quality characteristics Sensory features: (1) Living pig: The whole body is grayish-black, the skin is pink, and the lower end of the limbs is white. It is commonly called “black cloud cover, four-foot snow”. The head is beautiful, the butterfly ear, the head is divided into long head and short head. The long head type is commonly called "阉鸡头", the short head type is commonly called "shou word head", the tail root is thick, the tail tip is slightly flat, commonly known as "mud tail" . (2) Pork: The meat is bright red, shiny, and the marble pattern is obvious; the surface is slightly dry or air-dried, not sticky, and elastic; after boiling, the broth is clear and transparent, and the flavor is rich. 2. 3. Safety and other quality technical requirements: Product safety and other quality technical requirements must comply with relevant national regulations.

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Producers within the scope of the production of Luodai Black Pig may apply to the Quality and Technical Supervision Bureau of Changsha County, Hunan Province for the use of the “Special Mark for Geographical Indication Products”, which shall be reviewed by the Hunan Provincial Bureau of Quality and Technical Supervision and submitted to the AQSIQ for approval. announcement.