A cross-sectional study of swine influenza in intensive and extensive farms in the northeastern region of the state of São Paulo, Brazil
| Autor: | Hélio José Montassier, Luis Antonio Mathias, Igor Renan Honorato Gatto, Luís Guilherme de Oliveira, Daniele Araujo Pereira, Henrique Meiroz de Souza Almeida, Gabriel Yuri Storino |
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| Přispěvatelé: | Universidade Estadual Paulista (Unesp) |
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
medicine.medical_specialty Veterinary medicine Farms Disease occurrence Swine Epidemiology 040301 veterinary sciences Cross-sectional study animal diseases Secondary infection Enzyme-Linked Immunosorbent Assay Weaning Disease Antibodies Viral 0403 veterinary science 03 medical and health sciences Influenza A Virus H1N1 Subtype Orthomyxoviridae Infections Food Animals Risk Factors Prevalence medicine Animals Orthmyxoviridae Swine Diseases Porcine respiratory disease complex business.industry 04 agricultural and veterinary sciences Cross-Sectional Studies 030104 developmental biology Animals Newborn SIV Spain Infectious disease (medical specialty) Herd Female ELISA Pigs Animal Science and Zoology business Brazil |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| ISSN: | 1573-7438 0049-4747 |
| Popis: | Made available in DSpace on 2018-12-11T17:29:36Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-01-01 Swine influenza (SI) is a seasonal infectious disease highly important to the world pig industry. Loss of daily weight gain, increased costs for the prevention and treatment of secondary infections are the main economic losses associated with the presence of this disease. However, some epidemiological features of SI remain quite unclear. This study focused on assessing the prevalence of swine influenza virus (SIV) infection in intensive and extensive pig herds and associating risk factors. A set of 601 blood samples of five intensive farrow-to-finish farms and 361 blood samples from 56 extensive farms were analyzed using an indirect ELISA kit CIVTEST SUIS INFLUENZA®, Hipra (Amer, Spain), in order to detect anti-SIV antibodies. In total, 24.13 % of samples from intensive herds were positive, while no positive samples were detected in extensive rearing herds. Sow and weaning piglets had the highest prevalence values. In the intensive rearing system, occurrence of reproductive disorders and exposure to recently introduced animals were positively associated with the disease occurrence in swine herds. The findings highlight the importance of sows in the epidemiology of the disease and bring information about risk factors involved in the occurrence of swine influenza in intensive herds. Faculty of Agricultural and Veterinary Sciences São Paulo State University (UNESP), Via de Acesso prof. Paulo Donato Castellane s/n Faculty of Agricultural and Veterinary Sciences São Paulo State University (UNESP), Via de Acesso prof. Paulo Donato Castellane s/n |
| Databáze: | OpenAIRE |
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