1. College of Life Science, Ludong University, Yantai, Shandong, China
2. Shandong Breeding Environmental Control Engineering Laboratory, Ludong University, Yantai, Shandong, China
3. Yantai Key Laboratory of Animal Pathogenetic Microbiology and Immunology, Ludong University, Yantai, Shandong, China
4. Shandong Provincial Key Laboratory of Quality Safty Monitoring and Risk Assessment for Animal Products, Institute of Veterinary Drug Quality Inspection of Shandong Province, Ji’nan, China
5. Department of Environmental Management, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China