1. College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, 625014, China
2. Department of Animal Production, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, BE-9000 Ghent, Belgium
3. ChinaConduct, Karel de Stoutestraat, 49, Ghent, Belgium
4. Faculty of Arts and Philosophy, Department of Eastern Languages and Culture, Blandijnberg 2, Ghent, Belgium