期刊
JOURNAL OF VETERINARY DIAGNOSTIC INVESTIGATION
卷 20, 期 2, 页码 156-163出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/104063870802000203
关键词
Detection; monitor; mucosal transudate; oral fluids; polymerase chain reaction; Porcine reproductive and respiratory syndrome virus; surveillance
资金
- Pork Checkoff
- National Pork Board
Isolation of Porcine reproductive and respiratory virus (PRRSV) from oral fluids was First reported in 1997. The objective of the Present study was to determine whether PRRSV and/or anti-PRRSV antibodies were present in oral fluids at diagnostic levels. The level and duration or PRRSV and anti-PRRSV antibodies in serum and oral fluids Was evaluated in 3 age groups of pigs (4, 8, or 12 weeks of age) inoculated with a type 2 (North American) PRRSV isolate. Serum, buccal swabs, and pen-based Oral Fluid samples were collected for 63 days following inoculation. Specimens were assayed for PRRSV by real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR), and for anti-PRRSV antibodies by enzyme-linked immunosorbent assay (ELISA) and indirect fluorescent antibody test (IFAT). Porcine reproductive and respiratory syndrome virus was detected by real-time qRT-PCR in serum for approximately 5 weeks and in Oral fluids for approximately 4 weeks postinoculation. Pig age at the time of inoculation had no effect on the quantity or duration of virus in oral fluid samples. Low levels of anti-PRRSV antibody were detected in oral fluid samples by ELISA and IFAT. Although the approach remains to be validated in the fields the results of this experiment suggest. that pen-based oral fluid sampling could be an efficient. cost-effective approach to PRRSV surveillance in swine populations.
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