1. State Key Laboratory of Direct-Fed Microbial Engineering
2. Beijing Feed Safety and Biological Control Engineering Research Center; Beijing
3. Department of Animal Science; North Carolina State University; Raleigh USA
4. Feed Research and Technology Center, Beijing DaBeiNong Science and Technology Group Company, Ltd. (DBN Group)
5. Inner Mongolia Ulanqab Institute of Animal Husbandry Science; Ulanqab Inner Mongolia China