**Acknowledgements**

We are grateful to the Foundation for Research Support of the State of Rio de Janeiro (FAPERJ), National Council for Scientific and Technological Development (CNPq), and Coordination for the Improvement of Higher Education Personnel (CAPES) for grants that supported this work. We express our sincere thanks to Dr. Catherine Logue, Dr. Lisa Nolan, and Dr. Nicolle Barbieri from Poultry Disease Research Center, University of Georgia, United States of America, for providing us with technical conditions for the development of part of the reported work. We also thank Dr. Helena Maria Neto Ferreira from the Department of Pharmacy, University of Porto, Portugal, for helping us perform the initial beta-lactamases experiments. Our deep gratitude goes to all the former and present staff of the Veterinary Bacteriology Laboratory at Federal Rural University of Rio de Janeiro.
