Prevalence of nasopharyngeal bacteria during naturally occurring bovine respiratory disease in commercial stocker cattle.

ABSTRACT: Bovine respiratory disease (BRD) is one of the most common economic and health challenges to the beef cattle industry. Prophylactic use of antimicrobial drugs can alter the microbial communities in the respiratory tract. Considering that the bovine upper respiratory tract microbiome has been associated with generalized health, understanding the microenvironment that influences this microbiome may provide insights into the pathogenesis of BRD. This study aimed to determine temporal variation in nasopharyngeal (NP) microbiome in naturally occurring BRD in newly received stocker calves. Mixed breed steers (n = 40) were purchased from an auction market and housed in a commercial stocker farm. Clinical signs were used to identify BRD affected animals, and calves were categorized based on

SUBMITTER: Akter A 

PROVIDER: S-EPMC11756368 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature