文章基本信息

标题：Antibacterial effects of Nano-silver suspension against some fish pathogens (In vitro)
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作者：Basma Dahdouh ; Ola Basha ; Yasser Haggag 等
期刊名称：Alexandria Journal of Veterinary Sciences
印刷版ISSN：1110-2047
电子版ISSN：1110-2047
出版年度：2020
卷号：67
期号：2
页码：75-81
DOI：10.5455/ajvs.134532
出版社：International Medical Journal Management and Indexing System
摘要：The immensity of using antibiotics in aquaculture has many drawbacks on the industry itself and on consumers' health. The alternatives of using antibiotics are usually questionable. The current study was trying to find out the effect of Nanosilver (AgNPs) on some bacterial pathogens infecting Oreochromis niloticus (O.niloticus) in Egypt. The antibacterial activity of the AgNPs was assessed by well diffusion method. Different concentrations of the AgNPs were analyzed by MIC and MBC techniques. Finally the potential AgNPs which showed maximum antibacterial activity was also subjected for the time kill assay method. The in vitro study revealed that the AgNPs suspension at concentration of 50 ppm showed maximum activity against Aeromonas hydrophila, Pseudomonas aeruginosa and streptococcus agalactiae. It is also noted that, 50 ppm concentrations of the AgNPs showed the maximum reduction of bacterial growth, inhibit the bacterial motility, reduced the pigment production by P. aeruginosa, with highest inhibition zone on MH agar against the 3 bacterial species. Moreover, the effects of AgNPs on the 3 bacteria detected under TEM and the results were tremendous efficacy. It is concluded from the present study, AgNPs could be used as an effective antibacterial agent for disease free fish management.
关键词：O.niloticus;nanosilver;Antibiotics.