Breed-to-wean farm factors associated with influenza A virus infection in piglets at weaning
| Autor: | Robert B. Morrison, Adam Schelkopf, Matthew W. Allerson, Marie R. Culhane, Andres M. Perez, Fabian Orlando Chamba Pardo, Montserrat Torremorell |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Male Veterinary medicine medicine.medical_specialty Databases Factual 040301 veterinary sciences Swine animal diseases Weaning Biology medicine.disease_cause Real-Time Polymerase Chain Reaction 0403 veterinary science 03 medical and health sciences Food Animals Orthomyxoviridae Infections Risk Factors Surveys and Questionnaires Epidemiology Influenza A virus medicine Pig farming Animals Longitudinal Studies Animal Husbandry Plant Proteins Swine Diseases business.industry Vaccination 04 agricultural and veterinary sciences Animal husbandry Breed United States Nasal Mucosa 030104 developmental biology Influenza Vaccines Multivariate Analysis Animal Science and Zoology Livestock Female business |
| Zdroj: | Preventive veterinary medicine. 161 |
| ISSN: | 1873-1716 |
| Popis: | Breed-to-wean pig farms play an important role in spreading influenza A virus (IAV) because suckling piglets maintain, diversify and transmit IAV at weaning to other farms. Understanding the nature and extent of which farm factors drive IAV infection in piglets is a prerequisite to reduce the burden of influenza in swine. We evaluated the association between IAV infection in piglets at weaning and farm factors including farm features, herd management practices and gilt- and piglet-specific management procedures performed at the farm. Voluntarily enrolled breed-to-wean farms (n = 83) agreed to share IAV diagnostic testing and farm data from July 2011 through March 2017 including data obtained via the administration of a survey. There were 23% IAV RT-PCR positive samples of the 12,814 samples submitted for IAV testing within 2989 diagnostic submissions with 30% positive submissions. Among all the factors evaluated (n = 24), and considering the season-adjusted multivariable analysis, only sow IAV vaccination and gilt IAV status at entry significantly reduced (p-value0.05) IAV infections in piglets at weaning. Results from this study indicate that veterinarians and producers could manage these identified factors to reduce the burden of influenza in piglets prior to wean and perhaps, reduce the spread of IAV to other farms and people. |
| Databáze: | OpenAIRE |
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