Di Gao,   Swine Reproduction/Health Management Specialist， veterinary practitioner， and Master of Preventive Veterinary Medicine. Over 10 years technical service experience in the pig industry. Worked in PIC and now works as senior technical service manager in MSD Animal Health Products (Shanghai) Co., LTD. He is engaged in providing customers with pig health, farm management training, disease diagnosis and prevention et al. Has published many papers and participated in the compilation and translation of several classic works. Specializing in swine respiratory disease diagnosis and control; Disease elimination; Biosecurity and improvement of reproduction performance.