期刊
TROPICAL ANIMAL HEALTH AND PRODUCTION
卷 49, 期 5, 页码 945-949出版社
SPRINGER
DOI: 10.1007/s11250-017-1279-7
关键词
PPV4; qPCR; Ungulate copiparvovirus 2; Viral load
资金
- Conselho Nacional de Desenvolvimento Cientifico - CNPq
- Financiadora de Estudos e Projetos - FINEP
A SYBR Green-based real-time polymerase chain reaction (qPCR) was designed to detect Ungulate copiparvovirus 2, also known as porcine parvovirus 4 (PPV4). The test was applied to search for PPV4 DNAemia in sera from 1- to 4-month-old pigs displaying signs of postweaning multisystemic wasting syndrome (PMWS), as well as in sera from healthy swine at equivalent age and in sera from older healthy animals (> 6 months old). High levels of PPV4 DNA were detected in PMWS-affected pigs. The mean viral DNA load in PMWS-affected pigs was 5.2 x 10(7) copies/mL, whereas in young healthy pigs it was 1.4 x 10(5) copies/mL (P ae 0.001). Although the copy numbers were lower in younger PMWS-affected individuals, this result sheds some light on the possible association between PPV4 viral load detection in this group and the immune impairment caused by PMWS.
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