Cross-sectional study on risk factors for Porcine Reproductive and Respiratory Syndrome virus sow herd instability in German breeding herds.

Nathues, Christina; Janssen, Eltje; Duengelhoef, Andrea; Nathues, Heiko; Grosse Beilage, Elisabeth (2018). Cross-sectional study on risk factors for Porcine Reproductive and Respiratory Syndrome virus sow herd instability in German breeding herds. Acta Veterinaria Scandinavica, 60(1), p. 57. BioMed Central Ltd. 10.1186/s13028-018-0411-7

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BACKGROUND Porcine Reproductive and Respiratory Syndrome virus (PRRSV) stability, besides meeting production targets, is also a requirement for several control options of PRRS in pig breeding farms. This study aimed to investigate the frequency of, and risk factors associated with, PRRSV instability in pig breeding farms in northern Germany. In 120 sow herds, a questionnaire on production and management parameters was filled, and blood samples from 30 suckling pigs from 10 different litters were taken and examined using real-time polymerase chain reaction (PCR). RESULTS PRRSV was detected in 32 herds (27%), thus classified as PRRSV-unstable. According to multivariable logistic regression analysis, a suckling period ≤ 21 days, a low distance between the cadaver collection site and the actual sow barn, ≥ 2 pig herds in a 1000 m radius, presence of external employees, a time interval between purchase of gilts of ≤ 9 weeks and a 1- or 2-weekly farrowing rhythm were associated with a higher risk of PRRSV instability. CONCLUSIONS External and internal biosecurity as well as management factors were associated with PRRSV instability, which could be targeted by farmers and veterinarians to help them to achieve PRRSV PCR-negative status and in the control of PRRS.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > Swine Clinic
05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH) > Veterinary Public Health Institute

UniBE Contributor:

Nathues, Christina and Nathues, Heiko

Subjects:

600 Technology > 610 Medicine & health
600 Technology > 630 Agriculture

ISSN:

1751-0147

Publisher:

BioMed Central Ltd.

Language:

English

Submitter:

Nathalie Viviane Zollinger

Date Deposited:

11 Oct 2018 17:10

Last Modified:

23 Oct 2019 12:01

Publisher DOI:

10.1186/s13028-018-0411-7

PubMed ID:

30231906

Uncontrolled Keywords:

Herd management Herd prevalence PRRS control Risk factors

BORIS DOI:

10.7892/boris.120432

URI:

https://boris.unibe.ch/id/eprint/120432

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