Frequency of Salmonella infection among backyard and commercial duck flocks in Iran, serotyping and drug resistance profile of Salmonella isolated from ducks

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Keywords:

Salmonellosis, Antimicrobial susceptibility, Salmonella Enteritis, Salmonella Typhimurium, Salmonella Infantis, Duck, Iran

Abstract

Salmonella is one of the most important food-borne infections with worldwide distribution that infects humans and a wide range of animals. Poultry and poultry products are considered major sources of Salmonella infections in humans. Like chickens, ducks can be important in transmitting Salmonella bacteria to humans. The aim of this study was to obtain more knowledge about the frequency of Salmonella infection in ducks in Iran, to determine the serovar and the antimicrobial resistance pattern of Salmonella isolates. In this study, fecal samples were collected from four provinces of Iran. Each six fecal samples were pooled and 352 samples were obtained in total. To isolate Salmonella, all samples were cultured according to the previously described standard techniques. From a total of 352 stool samples, 20 Salmonella isolates (17.6%) were isolated and serotyped by using slide agglutination test and then were subjected to polymerase chain reaction with Salmonella genus-specific primers and species-specific primers for serovars Enteritidis, Typhimurium and Infantis. The disc diffusion method was used to determine the sensitivity of isolates to 21 antimicrobial agents. Serotyping identified 15 serovars Enteritidis and three serovar Typhimurium. Two isolates remained unknown. No isolate was resistant to ceftazidime, ceftriaxone, lincospectin, fosfomycin, and colistin. The resistance to other agents was variable. There were 17 resistance patterns to 21 antimicrobial agents. Among the resistant isolates, the occurrence of multiple resistance was very significant, so that they showed resistance to at least 1 and at most 11 drugs. By comparing the findings of this study and other investigations in this field, it was shown that, like chicken flocks, Salmonella is circulating in duck flocks of Iran

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Published

2024-07-07

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Articles

How to Cite

Javidnezhad, J., Peighambari, S. M., Razmyar, J., & Barin, A. (2024). Frequency of Salmonella infection among backyard and commercial duck flocks in Iran, serotyping and drug resistance profile of Salmonella isolated from ducks. Journal of Poultry Sciences and Avian Diseases. https://jpsad.com/index.php/jpsad/article/view/68

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