过硫酸氢钾复合物粉对4种常见水产病原微生物的杀灭效果

Killing effect of compound peroxymonosulphate powder on four common aquatic pathogens

为验证过硫酸氢钾复合物粉在水产养殖中消毒的有效性,评价了其对草鱼(Ctenopharyngodon idella)呼肠孤病毒(Grass carp reovirus,GCRV)、斑点叉尾鮰(Ictalurus punctatus)病毒(Channel catfish virus,CCV)、嗜水气单胞菌(Aeromonas hydrophila)和无乳链球菌(Streptococcus agalactiae)4种水产常见致病病原的杀灭效果,和有机物、温度、pH 3种因素对杀菌效果的影响,并在此基础上开展了过硫酸氢钾复合物粉对池塘养殖水体中目标菌的杀灭试验,和对患嗜水气单胞菌的病鲫(Carassius auratus)的药效试验。结果显示,过硫酸氢钾复合物粉对4种致病微生物均具有显著的杀灭效果。降低菌悬液中有机物浓度、适当提高作用温度或适当降低消毒液pH,均能促进过硫酸氢钾复合物粉消毒液的杀菌效果。通过目标菌的杀灭试验和药效试验,进一步确定了该消毒剂在实际使用中对目标菌杀灭的有效性和对鲫感染嗜水气单胞菌后的显著治疗效果。研究表明,过硫酸氢钾复合物粉是潜在的水产用消毒剂。

To study the disinfection validity of compound peroxymonosulfate powder in aquaculture,we evaluated its killing effect on grass carp(Ctenopharyngodon idella)reovirus(GCRV),channel catfish(Ictalurus punctatus)virus(CCV),Aeromonas hydrophila and Streptococcus agalactiae,and studied the germicidal effects of three factors(Organic matter,temperature and pH).Moreover,we conducted a killing assay of the target bacteria in pond aquaculture water and a pharmacodynamic test of crucian carp(Carassius auratus)with A.hydrophila disease.The results show that the compound peroxymonosulfate powder had a significant killing effect on the four pathogens.Reducing organic matter concentration in bacterial suspension,appro-priately increasing temperature or decreasing pH of disinfectant could promote the germicidal effect.In addition,through the killing assay of target bacteria and pharmacodynamic test of crucian carp,we further confirmed the disinfectant validity on tar-get bacteria and significant therapeutic effect of crucian carp infected with A.hydrophila.Thus,the study indicates that com-pound peroxymonosulfate powder can be used as a potential disinfectant in aquaculture.