viruses Article Genetic Analysis of Avian Coronavirus Infectious Bronchitis Virus in Yellow Chickens in Southern China over the Past Decade: Revealing the Changes of Genetic Diversity, Dominant Genotypes, and Selection Pressure Wensheng Fan, Ning Tang, Zhihua Dong, Jiming Chen, Wen Zhang, Changrun Zhao, Yining He, Meng Li, Cuilan Wu, Tianchao Wei, Teng Huang, Meilan Mo * and Ping Wei * College of Animal Science and Technology, Guangxi University, Nanning 530004, China;