Dr. Zheng Weijiang is an associate professor at the Department of Animal Science and Technology, Nanjing Agricultural University. His research interests are animal nutrition and gut health. The main research directions include the following aspects: 1) Microbial transformation and effects of feed-derived active substances; 2) Effects of mycotoxins on livestock animal growth, intestinal health and microbiota and mitigation measures; 3) Biological functions and applications ofhydrogen molecular biology in livestock animals.