Isolation and identification of Salmonella spp. and Escherichia coli from water used during live transportation of Pangasius catfish, Pangasianodon hypophthalmus

Q3 Biochemistry, Genetics and Molecular Biology
A. Bhuiyan, Md Hossain, M. Uddin, Michaela Haider
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Abstract

Pangasius catfish (Pangasianodon hypophthalmus) is popular among fish farmers of Bangladesh due to its hardy characteristics, fast growth, and its ability to survive in high densities. Many consumers love to buy this fish due to its low market price and delicious flashy meat, especially as live condition. Bacterial outgrowth in transport water is frequent consequence including some enteric groups like Salmonella spp. and E. coli. The study attempted to know the occurrence of Salmonella spp. and E. coli in water used during live transportation of Pangasius catfish in Bangladesh. Water samples were collected from three different Pangasius catfish transportation channels at 2 hours intervals at on-board transportation vehicle. The collected waters were then plated onto SS and EMB agar plates and obtained 15, 20, and 17 suspected isolates from channel 1, channel 2 and channel 3, respectively. The isolates were confirmed through PCR techniques; Salmonella spp. was found only in Channel 1 while E. coli were found in all the three sampling channels. Among the suspected isolates, 13 were positive for E. coli in channel 1, while 16 in both channel 2 and channel 3. Among the suspected isolates, 86.54% was E. coli positive, 1.92% was Salmonella positive, and 11.54% isolates was not confirmed. The results indicated that the fishes were contaminated with Salmonella spp. and E. coli species either in the culture systems or during handling and live transportation.
下眼鲶鱼活体运输用水中沙门菌和大肠杆菌的分离鉴定
鲶鱼(Pangasianodon hypophthalmus)因其耐寒、快速生长和高密度生存能力而受到孟加拉国养鱼户的欢迎。许多消费者喜欢购买这种鱼,因为它的市场价格低,肉鲜美,尤其是作为生活条件。细菌在运输水中的生长是常见的后果,包括一些肠道菌群,如沙门氏菌和大肠杆菌。本研究试图了解孟加拉国鲶鱼活体运输过程中使用的水中沙门氏菌和大肠杆菌的发生情况。在船上运输车辆上,每隔2小时从三条不同的鲶鱼运输通道采集水样。然后将收集的水分别涂于SS和EMB琼脂板上,分别从通道1、通道2和通道3中获得15株、20株和17株疑似分离株。采用PCR技术对分离株进行鉴定;沙门氏菌仅在1通道中检出,大肠杆菌在3个通道中均检出。在疑似分离株中,通道1大肠杆菌阳性13株,通道2和通道3均阳性16株。其中大肠杆菌阳性86.54%,沙门菌阳性1.92%,未检出11.54%。结果表明,这些鱼在养殖、加工和活体运输过程中均受到沙门氏菌和大肠杆菌的污染。
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来源期刊
Journal of Advanced Biotechnology and Experimental Therapeutics
Journal of Advanced Biotechnology and Experimental Therapeutics Biochemistry, Genetics and Molecular Biology-Biochemistry, Genetics and Molecular Biology (all)
CiteScore
1.90
自引率
0.00%
发文量
41
审稿时长
8 weeks
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