Abstract
Salmonella species (spp) is the most important gastrointestinal pathogen present ubiquitously. Non typhoidal Salmonella (NTS) is commonly associated with gastroenteritis in humans. Layer birds once get infection with NTS, can become persistently infected with Salmonella Typhimurium and intermittently shed the bacteria. It results in a high risk of potential exposure of eggs to the bacteria. The current study was conducted to determine the serotype diversity, presence of virulence genes, antibiotic resistance pattern, and genes ofNTS from poultry enteritis. Out of 151 intestinal swabs from poultry total 118 NTSwere isolated, which were characterized serologically asS.Typhimurium(51strains), S.Weltevreden(57 strains) anduntypable(10 strains). Most effective antibiotics wereamikacin,gentamycinand ceftriaxone(33.05%)followed by ampicillin, azithromycin and ciprofloxacin (16.69%), co-trimoxazole (13.55%), and tetracycline (6.78%). Multidrug resistance recorded in 17.70%(N = 21/118) strains. Antimicrobial-resistant genesi.e.blaTEM,blaSHV,blaCTX-M,tet(A),tet(B),tet(C), sul1, sul2, sul3.blaTEMandtet(A) were present in 95% (20/21).Eleven virulence genesi.e.invA,hilA,sivH,tolC,agfA,lpfA,spaN,pagC,spiA,iroNandfliC2 were present in all the 30 isolates. While,sopEwas present inonly 2isolates,NTSstrainswith characteristics of pathogenicityandmultidrugresistancefrom poultry enteritis were detected.Multidrug resistance showed the necessity of prudent use of antibiotics in the poultry industry.
Published Version
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