Tshering Chenga, Takagi Mitsuhiro, Deguchi Eisaburo
United Graduate School of Veterinary Medicine, Yamaguchi University, Japan.
J Vet Med Sci. 2012 Jan;74(1):107-10. doi: 10.1292/jvms.11-0233. Epub 2011 Aug 29.
We investigated the seroprevalence rate of Torque teno sus virus types 1 (TTSuV1) and 2 (TTSuV2) in the sera of 38 post weaning multisystemic wasting syndrome (PMWS)-suspected pigs and 43 porcine circovirus type 2 (PCV2)-vaccinated normal pigs on 3 commercial pig farms in southern Japan by using nested polymerase chain reaction. High seroprevalence rate of TTSuVs was observed in both PMWS-suspected pigs (100%) and PCV2-vaccinated normal pigs (90.7%). The seroprevalence rate of TTSuV2 was significantly higher in the PMWS-suspected pigs than in PCV2-vaccinated normal pigs (97.4% versus 81.4%, P<0.05), whereas no such difference was observed for TTSuV1 between the 2 groups of pigs. In both pig groups, the seroprevalence rate of TTSuV2 was significantly higher than that of TTSuV1 (P<0.01-0.05). These results show that TTSuVs are highly seroprevalent in both PMWS-suspected pigs and PCV2-vaccinated normal pigs with TTSuV2 being more seroprevalent in the former than in the latter.
我们通过巢式聚合酶链反应，对日本南部3个商业猪场的38头疑似断奶后多系统消耗综合征（PMWS）仔猪和43头接种了2型猪圆环病毒（PCV2）的正常仔猪血清中的1型和2型细小病毒（TTSuV1和TTSuV2）血清流行率进行了调查。在疑似PMWS的仔猪（100%）和接种PCV2的正常仔猪（90.7%）中均观察到TTSuV的高血清流行率。疑似PMWS的仔猪中TTSuV2的血清流行率显著高于接种PCV2的正常仔猪（97.4%对81.4%，P<0.05），而两组仔猪中TTSuV1未观察到这种差异。在两组仔猪中，TTSuV2的血清流行率均显著高于TTSuV1（P<0.01-0.05）。这些结果表明，TTSuV在疑似PMWS的仔猪和接种PCV2的正常仔猪中均具有较高的血清流行率，且TTSuV2在前者中的血清流行率高于后者。
