东北地区猪群链球菌分离鉴定及流行病学调查分析

为了解猪链球菌在东北地区正常猪群中的流行情况,对黑龙江、吉林、辽宁省等地无菌采集的2 204份鼻拭子接入含有1‰抗生素的链球菌液体选择培养基中,37℃静止培养24 h,挑取细菌培养物涂片,革兰氏染色后镜检,将镜检为革兰氏阳性的链球菌利用PCR方法进行猪链球菌种的鉴定,在此基础上再利用PCR方法进行猪链球菌1、2、7、9血清型的分型鉴定.结果显示,黑龙江、吉林、辽宁3省猪群链球菌的携带率分别为29%、27%、34%,东北地区分离得到猪链球菌共155株,其中1型猪链球菌7株,2型猪链球菌39株,7型猪链球菌4株,9型猪链球菌11株,其他型猪链球菌94株.

Isolation,identifiation and epidemiological analysis of swine Streptococcus in the northeast region of China

In order to know that Streptococcus exist in health swine herd,2 204 cases of nose swabs were collected in swine from different areas in Dongbei three province of northeast China.Seed swab to Streptococcus culture medium,24 hours after culturing,gram staining with becteria culture,gram positive Streptococcus were identified with PCR technology,then farther identified serotype with Streptococcus suis 1,2,7,9 serotype special primers.The results showed that Streptococcus exist rate in swine herd of Heilongjiang,Jinlin,Liaoning is 29 %,27 %,34 %,respectively.PCR typing assay indicated that 155 strains of Streptococcus suis were isolated including 7 strains of 1 serotype,39 strains of 2 serotype,4 strains of 7 serotype,11 strains of 9 serotype,94 strains of other serotype in three province of northeast China.