“One Pig, One Code” Traceability: Tongnan Black Pigs Sold at “Reassuring Prices” via Smart Ear Tags
Chongqing Municipal Commission of Agriculture and Rural Affairs (Reporter Lin Yue, Source: Chongqing Municipal Commission of Agriculture and Rural Affairs) By scanning the QR code on the pork packaging, 32 data items of a black pig from birth immunization, feed feeding to slaughter quarantine can be fully visible. In Panshan Village, Xinsheng Town, Tongsan District, Chongqing, the traceability technology based on smart ear tags has significantly increased the value of the national geographical indication product “Luopan Mountain Black Pig” – with a price 16 yuan higher per kilogram than that of ordinary pork, it is still in short supply, driving an average annual income increase of 28,000 yuan for over 300 local pig farmers.
In the past, it was better to sell pigs skillfully than to raise them well. Now, with traceability codes, consumers can see and feel at ease, and we also have the confidence to sell. Li Jianguo, a pig farmer from Panshan Village, pointed at the black pigs wearing ear tags in the pigsty and introduced. As the core technical support for the “Cloud Adoption” project in Tongnan District, the smart ear tag is not only the “electronic ID card” of black pigs, but also a trust bond connecting the breeding end and the consumption end. Farmers can upload their breeding data in real time through the “Tongxiang Tianyuan” platform, while consumers can check the growth status of the adopted black pigs at any time and even make online appointments for feeding times.
In the intelligent farm of Chongqing Chuangrui Breeding Co., LTD., over 800 black pigs are all wearing smart ear tags. On the large screen in the monitoring center, the activity trajectory, temperature changes and feeding records of each pig can be clearly checked. The system can automatically identify abnormal data. Last month, five pigs showed warnings of decreased food intake. We promptly discovered that it was a respiratory infection, and the cure rate reached 100%. The company’s person in charge did the math. After the application of smart ear tags, the incidence of diseases decreased by 42%, feed waste was reduced by 15%, and with the premium brought by traceability, the net profit per black pig increased to 600 yuan.
This “technology + brand + e-commerce” model is reshaping the value chain of local characteristic livestock industries. Wang Jianjun, director of the Rural and Agricultural Commission of Tongnan District, said that the district has equipped 23,000 Luopan Mountain black pigs with smart ear tags and established a full-chain traceability system covering breeding, processing and sales. Through cooperation with platforms such as JD.com and Pinduoduo, the order volume of “cloud adoption” has increased by 67% annually, driving the output value of the black pig industry to exceed 320 million yuan.
At the e-commerce service station in Panshan Village, villagers are busy packing fresh pork. Scan the traceability code on the packaging, and the screen immediately displays: “Black Pig No. 20250318-07, born on March 18, 2025, fed with natural feed such as corn and soybean meal, with complete immunization records and qualified slaughter inspection.” “This is not merely a string of data; it’s our golden brand.” ” Li Jianguo said. Industry insiders believe that the “traceability” endowed to agricultural products by smart ear tags is becoming the core competitiveness for improving the quality and efficiency of rural characteristic industries.