安徽农业科学2011，Vol.39Issue(29)：17942-17943,17948,3.
杂交鳢(乌鳢♂×斑鳢♀)及其亲本对2种病原菌的抗感染能力比较
Comparison on Anti-infection of Hybrid Snakehead (Channa argUS ♂ × Channa maculate ♀ ) and Its Parents to Two Pathogenic Bacteria
摘要
Abstract
[Objective] The study aimed to analyze and evaluation the anti-infective level of to the pathogenic bacteria. [ Method] The test of anti-infection to 2 pathogenic bacteria was conducted on the hybrid snakehead and its parents through the artificial infection test method. [ Results] When Aeromonas hydrophila was the tested strain, the bacterium fluid was 9 × 108 cfu/ml in which there were 4 dilution grade of 100, 10 -1,10-2 and 10-3,the injection dosage was 0.5 ml/fish, the median lethal dose (LD50) on the hybrid snakehead was between C. Argus and C. Maculate,and no significant difference was found among the strains. When Nocardia seriolea was the tested strain ,the bacterium fluid was 7 ×109 cfu/ml in which there were 4 dilution grade of 100, 10-1 ,10-2 and 10-3, the injection dosage was 0.5 ml/fish, the median lethal dose (LD50) on hybrid snakehead was between C. Maculate and C. Argus,and no significant difference was found among the strains. [Conclusion] When the bacterium fluid was at high levels of infection, both A. Hydrophila and Nocardia seriolea were highly pathogenic to 3 kinds of the snakehead fish. When the bacterium fluid was 108 cfu/ml, the mortality rate of the snakehead fish was 100%. When the fluid was at low level of infection, the mortality rate was significantly weakened. The different varieties had some different tolerance to the pathogenic bacteria.关键词
杂交鳢/嗜水气单胞菌/诺卡氏菌/抗感染能力Key words
Hybrid snakehead/Aeromonas hydrophila/Nocardia seriolea/Anti-infection分类
农业科技引用本文复制引用
林启存,冯晓宇,蔡丽娟,许宝青,刘凯..杂交鳢(乌鳢♂×斑鳢♀)及其亲本对2种病原菌的抗感染能力比较[J].安徽农业科学,2011,39(29):17942-17943,17948,3.基金项目
杭州市重大科技创新项目“杂交鳢优势利用及配套养殖技术研究与示范”(20083212A04). （20083212A04）
