室内循环水养殖美洲鲥高发细菌病的分离及防控建议

Preventation and Control Advice on High-incidence Bacterial Diseases of Indoor Circulating Water Cultured Shads

在高密度水泥池养殖环境下采集患病美洲鲥(Alosa sapidissima),从肝脏、脾脏、腹腔、体表等部位分离纯化病原菌,进行生理生化鉴定及药敏试验。结果显示,病原菌主要为气单胞菌属(温和气单胞菌、嗜水气单胞菌、豚鼠气单胞菌);药敏试验结果表明,病原菌主要对恩诺沙星、盐酸多四环素、甲砜霉素、氟苯尼考等4种抗生素较为敏感,对硫酸新霉素、氟甲喹敏感性一般,对磺胺间甲氧嘧啶钠、磺胺甲噁唑/甲氧苄啶具有耐药性。应保持养殖环境的适宜,提前预防疾病;当发生疾病时,及时采取治疗措施,并做好环境卫生的消控。

Suggestions for prevention and control measures were put forward based on the actual situation.The pathogenic bacteria were isolated and purified from the abdominal cavity,liver,spleen and body surface of disinfected Alosa sapidissima collected in high density cement pond culture environment,and the physicochemical and biochemical tests and drug sensitivity tests were carried out.The results showed that the isolates were mainly Aeromonas hydrophila.The drug sensitivity test showed that the isolates were mainly sensitive to Enrofloxacin,Doxycycline Hyclate,Thiamphenicol,Florfenicoll and other four antibiotics,while the isolates were generally sensitive to Neomycin Sulphate and Flumequine.Sodium sulfamethoxazine,sulfamethoxazole/trimethoprim were insensitive.Suggestions for prevention and control measures are as follows.Maintain the appropriate breeding environment.Prevent in advance.When the disease occurs,take timely treatment measures,and do a good job of environmental health control.