Distinct bacterial metacom m unities inhabit the upper and lower respiratory tract of healthy feedlot cattle and those diagnosed with bronchopneumonia

摘要

Recent evidence suggests that specific nasopharyngeal bacterial communities can provide colonization resistance against respiratory pathogens in cattle. However, the role that bacterial communities of the lower respiratory tract plays in respiratory health remains largely unknown. Therefore, our study aimed to compare the nasopharyngeal and tracheal bacterial communities between healthy feedlot cattle and those diagnosed with bronchopneumonia (BP).