Exploring bacterial diversity and antimicrobial resistance gene on a southern Brazilian swine farm

This study aimed to characterize the microbiota in a Brazilian swine farm and the resistome in wastewater treated in waste stabilization ponds (WSPs). Results showed increased bacterial diversity in WSPs, with resistance genes to tetracyclines, lincosamides, macrolides, rifamycin, phenicol, and multidrug resistance detected. The most abundant ARG was linG, conferring resistance to lincosamides. Mobile genetic elements (MGEs) like tnpA were identified in the samples, which could facilitate the dissemination of ARGs among bacteria. The study validates concerns about Brazil’s swine production system and emphasizes the need to avoid misuse and overuse of antimicrobials.