Composting manure in the poultry farm harbours multidrug-resistance <i>Salmonella</i>

<i>Salmonella</i> is one of the leading foodborne pathogens that cause gastroenteritis. It is imperative to monitor <i>Salmonella</i> contamination within poultry farms. This study focuses on the prevalence of <i>Salmonella</i> in composting manure at poultry farms a potential and persistent contamination sources. A batch of manure samples (<i>n</i> = 10) were collected from a local poultry farm, and half of the manure samples were detected to be <i>Salmonella</i>-positive. Serotyping results showed four serotypes among different isolated strains, including Typhimurium, Typhi, Newport, and Dublin. Isolates from manure generally demonstrated a high ciprofloxacin resistance and biofilm formation capacity. Multi-drug resistance was found in isolates from organic manure that had been fermented using high-temperature aerobic technology. Our study indicated that composting manure harboured <i>Salmonella</i> and might facilitate the transmission of <i>Salmonella</i> and the development of antimicrobial resistance. Proper composting strategies are needed to reduce the transmission of antimicrobial resistance and <i>Salmonella</i>.