Meina Liao, Jiaen Wu, Yafei Li, Xiaoqing Lu, Huizhen Tan, Shanshan Chen, Wenqing Huang, Xinlei Lian, Jian Sun, Xiaoping Liao, Yahong Liu, Saixiang Feng, Rongmin Zhang
We determined the longitudinal persistence of ceftiofur-resistant Escherichia coli from a chicken breeding farm in China. A total of 150 samples were collected from 5 breeding periods in a flock of layer hens, and the prevalence of ceftiofur-resistant E. coli fluctuated across the 5 chicken breeding stages: eggs, 3.33%; growing period, 100%; early laying period, 36.7%; peak laying period, 66.7% and late laying period, 80%. The most prevalent ceftiofur resistance genes were bla CTX-M-55 , bla CMY and bla NDM , and ST101 was the most prevalent and persistent sequence type across the breeding periods...
December 26, 2022: Animals: An Open Access Journal From MDPI