Liu Jiyu, male, Han ethnicity, is currently pursuing a doctoral degree and holds the titles of National Practicing Veterinarian and Senior Veterinarian. General Manager of the Production Management Department of the Pig Farming Division of Huanshan Group, in charge of the Seedling Production Department, Self-fattening Production Department, Boar Station Management Department, Production Data Department, Equipment Management Department, etc. After graduating with a master's degree, I have been engaged in pig production and pig herd health management. I have participated in the Summer Swine Short Course of IOWA STATE UNIVERSITY and the PIPESTONE Swine Prodoction field training practice in the United States twice successively, and investigated and studied advanced production management and pig herd health management techniques. In addition, I also participated in relevant capacity-building training programs such as internal management training within the company and comprehensive management training for middle and senior-level enterprises at the School of Literature and Business of Qingdao University. Current concurrent positions: Member of the Pig Industry Standardization Working Group of the National Technical Committee for Standardization of Animal Husbandry, Director of the Weihai Comprehensive Experiment Station of the Shandong Province Pig Industry Technology System, Deputy Secretary-General and Expert Group Member of the Shandong Veterinary Association, Expert Group Member and Standing Director of the Pig Industry Branch of the Shandong Animal Husbandry Association, Industry Mentor and Teaching Internship Base Instructor of Shandong Vocational College of Animal Husbandry and Veterinary Medicine, Editor of the "Pig Industry Science" magazine Wei et al.