Isolation and identification of Isolation and identification of from poultrycarcasses using conventional culture methods andmultiplex PCRassay from poultrycarcasses using conventional culture methods andmultiplex PCRassay
محل انتشار: فصلنامه طب دامی ایران، دوره: 5، شماره: 1
سال انتشار: 1390
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 373
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شناسه ملی سند علمی:
JR_IJVM-5-1_007
تاریخ نمایه سازی: 26 اردیبهشت 1394
چکیده مقاله:
Campylobacter jejuni is a major cause of food-borne diarrhea in many countries. Poultry and poultry products are known as important sourcesof humancampylobacteriosis. In this study, conventional culture and multiplex PCR methods were compared for the detection of isolated from poultrycarcasses. A total of 100 samples, representing 20 broiler flocks, were collected from poultry carcasses after the evisceration stage in the processing line at acommercial broiler slaughtering facility in Mashhad, Iran. In the conventional culture method, samples were processed by enrichment followed by selectiveplating, and then suspected colonies were isolated on sheep blood agar and tested for morphology, motility, Gram staining, biochemical properties and hippurate hydrolysis activity. For the identification of the genus and its serovar by molecular methods, a multiplex PCR assay (m-PCR) with twosets of specific primers was used. In the hippurate hydrolysis test of suspected colonies, 76% of the samples were determined as positive, while in the m-PCRassay 28% of cultures harvested were identified as . Two percent of hippurate hydrolyze negative colonies were found positive in the m-PCR test.It appears that the conventional method, based on the hippurate hydrolysis test for detection of , is a less reliable test. The use of them-PCR method, based on amplification from conserved genes, allows reliable detection and identification of C. jejuni
کلیدواژه ها:
نویسندگان
A Sari
Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
A Jamshidi
Department of Food Hygiene, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
M. R. Bassami
Department of Clinical Sciences, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran.