摘要
为评价水貂犬瘟热Vero细胞活疫苗(CDV3-CL株,悬浮培养)冻干制剂在临床应用中的安全性和免疫效果,分别在吉林、辽宁两省选择饲养规模相似的3个毛皮兽场进行疫苗安全性(10头份)和免疫效力实验(1头份)研究,接种后观察动物的临床症状,检测抗体水平并随机选择部分水貂进行攻毒试验。结果显示,超剂量接种水貂未见有明显的临床症状,对水貂的生产性能无明显影响;水貂免疫疫苗后21 d即可获得达到免疫保护的抗体水平;免疫180 d仍能维持较高水平的抗体,且能够保护动物抵抗强毒攻击。试验表明,水貂犬瘟热Vero细胞活疫苗(CDV3-CL株,悬浮培养)冻干制剂具有较好的临床保护效果。
Clinical safety(10 dose)and immune efficacy(1 dose)evaluation of the mink canine distemper attenuated live vaccine(CDV3-CL strain,suspension)have been conducted in 3 fur animal farms(one in Liaoning province,two were in Jilin provinces),respectively.During the whole period of the clinical safety trials,all vaccinated animals were clinically normal as non-immunized controls.At the onset of immune efficacy tests,animals were vaccinated with one dose of newly prepared vaccine,and sera were collected on 7,14,21,60,120 and 180 days post immunization(dpi)for test CDV serum neutralizing antibody(SN).The results showed that the SN could be detected as early as 7 dpi and it could reach to a high level(≥1∶64)at 21 dpi,which enough to protect mink from a challenge of 100 ID50 virulent CDV-LNM strain.The period of immunity duration is over 180 d.The above results demonstrated that this vaccine could be widely used in practice.
作者
冯二凯
易立
陈立志
张淼
罗国良
郭利
王振军
程世鹏
任飞
程悦宁
FENG Er-kai;YI Li;CHEN Li-zhi;ZHANG Miao;LUO Guo-liang;GUO Li;WANG Zhen-jun;CHENG Shi-peng;REN Fei;CHENG Yue-ning(Institution of Special Animal and Plant Science of Chinese Academy of Agriculture Science,Changchun 130112,China;Jiling Teyan Biotechnology Co.,Ltd,Changchun 130122,China)
出处
《中国兽药杂志》
2020年第4期24-29,共6页
Chinese Journal of Veterinary Drug
基金
吉林省“双十项目”重大科技攻关(20150201006NY)
吉林省科技发展计划(20150204073NY)。
关键词
水貂
犬瘟热
活疫苗
悬浮培养
临床试用
mink
canine distemper virus
live vaccine
suspension
filed trail
