Analysis of pathogenic bacteria and antimicrobial residues in bovine waste milk on dairy farms in southern Chile.

ABSTRACT: Waste milk (WM), a byproduct of dairy production, is often used as a cost-effective feed for calves, but it can contain pathogens and antimicrobial residues, which pose health risks. This study examined the microbiological quality and the presence of antimicrobial residues in WM from 36 dairy farms in southern Chile. In a cross-sectional study, WM samples were collected, and farm management data were gathered through a questionnaire. The samples were analyzed for total bacterial load, coliforms, staphylococci, streptococci/streptococci-like organisms (SSLOs), Salmonella spp., Mycobacterium avium subsp. paratuberculosis (MAP), Mycobacterium bovis, Mycoplasma spp., Prototheca spp., methicillin-resistant Staphylococcus aureus (MRSA), and extend

SUBMITTER: Ulloa F 

PROVIDER: S-EPMC12355818 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature