[Objective] The aim was to study the anti-bacterial effects of 5 kinds of Chinese herb extracts on Ameromonas hydrophila in vitro. [Method] in vitro anti-bacterial effects of 5 kinds of Chinese herb extracts like Gall...[Objective] The aim was to study the anti-bacterial effects of 5 kinds of Chinese herb extracts on Ameromonas hydrophila in vitro. [Method] in vitro anti-bacterial effects of 5 kinds of Chinese herb extracts like Galla Chinensis,Syzygium aromaticum,Salvia miltiorrhiza,Punica granatum L. and Terminalia chebula Retz on Ameromonas hydrophila were studied; furthermore,cure rates of the Chinese herb extracts with better anti-bacterial effects were determined to find out the optimal drug dosage. [Result] Under the same experimental conditions,Galla Chinensis,Punica granatum and Terminalia chebula Retz had relatively strong anti-bacterial effects on Ameromonas hydrophila,among them the anti-bacterial effect of Galla Chinensis was significantly higher than those of the others （P0.05）. The optimal treatment dose of Galla Chinensis treating bacterial septicemia caused by Aeromonas hydrophila was that they were treated with medicated bath for 40 min by 0.5 mg/ml Galla Chinensis extract,and the cure rate was 100%. [Conclusion] The research provides a scientific drug basis for the control and prevention of outbreak bacterial diseases of fish.展开更多
[Objective] This study was conducted to develop compound probiotics that can be used as the alternatives of chemical drugs and antibiotics in aquaculture. [Method] Different concentrations of EM （effective microorgan...[Objective] This study was conducted to develop compound probiotics that can be used as the alternatives of chemical drugs and antibiotics in aquaculture. [Method] Different concentrations of EM （effective microorganisms） and Bacillus amyloliquefaciens were mixed at a ratio of 1：1, and sprayed on fish feed. The growth of intestinal villi of the fishes that had been fed with the feed mixed with compound probiotics for three months was observed; meanwhile, the content of in- testinal Aeromonas hydrophila was detected by real-time quantitative PCR. ｜Result] The compound probiotics promoted the development of intestinal villi, and inhibited the growth of A. hydrophila, and the effects were also concentration dependent. However, the compound probiotics did not increase the thickness of the intestinal serous layer, muscular layer and submucosal layer. [Conclusion] The compound probiotics we prepared can be used and popularized in aquiculture as it can inhibit the growth of A. hydrophila.展开更多
Rice bacterial leaf streak,caused by Xanthomonas oryzae pv.oryzicola,is an important bacterial disease in rice-planting areas in South China and Southeast Asian countries.It occurs every year in local areas.This paper...Rice bacterial leaf streak,caused by Xanthomonas oryzae pv.oryzicola,is an important bacterial disease in rice-planting areas in South China and Southeast Asian countries.It occurs every year in local areas.This paper reviews the research advance in the occurrence and harms of rice bacterial leaf streak in China,classification of Xanthomonas oryzae and infection characteristics,pathogenic factors and pathogenicity of rice bacterial leaf streak and breeding of bacterial leaf streakresistance rice cultivars.Some issues involved in occurrence and control of rice bacterial leaf streak were presented,and the areas on which the future studies might be focused were discussed.展开更多
基金Supported by the Research and Demonstration of Export Quality Control Technology of Pengze Crucian Carp (2009GJA10024)~~
文摘[Objective] The aim was to study the anti-bacterial effects of 5 kinds of Chinese herb extracts on Ameromonas hydrophila in vitro. [Method] in vitro anti-bacterial effects of 5 kinds of Chinese herb extracts like Galla Chinensis,Syzygium aromaticum,Salvia miltiorrhiza,Punica granatum L. and Terminalia chebula Retz on Ameromonas hydrophila were studied; furthermore,cure rates of the Chinese herb extracts with better anti-bacterial effects were determined to find out the optimal drug dosage. [Result] Under the same experimental conditions,Galla Chinensis,Punica granatum and Terminalia chebula Retz had relatively strong anti-bacterial effects on Ameromonas hydrophila,among them the anti-bacterial effect of Galla Chinensis was significantly higher than those of the others （P0.05）. The optimal treatment dose of Galla Chinensis treating bacterial septicemia caused by Aeromonas hydrophila was that they were treated with medicated bath for 40 min by 0.5 mg/ml Galla Chinensis extract,and the cure rate was 100%. [Conclusion] The research provides a scientific drug basis for the control and prevention of outbreak bacterial diseases of fish.
基金Supported by the Corporation Project(09003699)Foundation of the Education Department of Jiangxi Province(GJJ150416)Foundation of the Science and Technology Department of Jiangxi Province(20122BBF60082)~~
文摘[Objective] This study was conducted to develop compound probiotics that can be used as the alternatives of chemical drugs and antibiotics in aquaculture. [Method] Different concentrations of EM （effective microorganisms） and Bacillus amyloliquefaciens were mixed at a ratio of 1：1, and sprayed on fish feed. The growth of intestinal villi of the fishes that had been fed with the feed mixed with compound probiotics for three months was observed; meanwhile, the content of in- testinal Aeromonas hydrophila was detected by real-time quantitative PCR. ｜Result] The compound probiotics promoted the development of intestinal villi, and inhibited the growth of A. hydrophila, and the effects were also concentration dependent. However, the compound probiotics did not increase the thickness of the intestinal serous layer, muscular layer and submucosal layer. [Conclusion] The compound probiotics we prepared can be used and popularized in aquiculture as it can inhibit the growth of A. hydrophila.
基金Supported by Special Fund for Agro-scientific Research in the Public Interest(201303015201103002-3)+2 种基金Natural Science Foundation of Jiangsu Province(BK20130713)Jiangsu Agricultural Science and Technology Innovation Fund(CX(12)3058)National High Technology Research and Development Program of China(863Program)(2011AA10A201)~~
文摘Rice bacterial leaf streak,caused by Xanthomonas oryzae pv.oryzicola,is an important bacterial disease in rice-planting areas in South China and Southeast Asian countries.It occurs every year in local areas.This paper reviews the research advance in the occurrence and harms of rice bacterial leaf streak in China,classification of Xanthomonas oryzae and infection characteristics,pathogenic factors and pathogenicity of rice bacterial leaf streak and breeding of bacterial leaf streakresistance rice cultivars.Some issues involved in occurrence and control of rice bacterial leaf streak were presented,and the areas on which the future studies might be focused were discussed.
