Publicação
The impact of vaccination on the consumption of antimicrobials in pigs
| Resumo: | Antimicrobial agents are being used in modern swine production worldwide, generating concern with regards to the development of antimicrobial resistance. Identifying efficient alternatives has therefore become a subject of interest. The aim of this study was to explore the impact of vaccination as an alternative to antimicrobial consumption in pig herds. The hypothesis was that herds with increased use of vaccination would have a lower antimicrobial consumption. Data were obtained from the Danish VetStat database in which prescriptions of medication for livestock are recorded as well as the Danish Central Husbandry Register. All Danish one-site pig herds, active in year 2013, with >50 sows and >200 weaners were selected for the study. Initially, data were analysed using a univariable model, and secondly a multivariable linear regression model was applied. The analyses included the use of three different vaccines against Porcine Circovirus Type 2 (PCV2), Mycoplasma hyopneumoniae (M_HYO) and Lawsonia intracellularis (LAW), respectively, as well as annual production measured as number of weaners produced in a year. The antimicrobial consumption was measured in animal daily doses (ADD). Out of the 1,513 herds selected for the study, 1,415 herds had antimicrobials prescribed for gastrointestinal disorders, and 836 for respiratory disorders. PCV2 vaccine was used in 880 herds, M_HYO vaccine in 787 and LAW vaccine was the least used, with 115 herds using it. The results suggested that antimicrobials, to some extent, were being used for other disease categories than those officially prescribed by the veterinarians. On average, herds using different combinations of vaccines had higher use of antimicrobials than herds not using the vaccines. Information about vaccination protocols, health status, biosecurity, and management practices was not available, limiting the ability to assess causality. |
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| Autores principais: | Silva, Carolina Pereira Temtem da |
| Assunto: | Antimicrobial consumption Alternatives Vaccination Pigs VetStat Denmark Consumo de antimicrobianos Alternativas Vacinação Suínos Dinamarca |
| Ano: | 2015 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório da Universidade de Lisboa |
| Resumo: | Antimicrobial agents are being used in modern swine production worldwide, generating concern with regards to the development of antimicrobial resistance. Identifying efficient alternatives has therefore become a subject of interest. The aim of this study was to explore the impact of vaccination as an alternative to antimicrobial consumption in pig herds. The hypothesis was that herds with increased use of vaccination would have a lower antimicrobial consumption. Data were obtained from the Danish VetStat database in which prescriptions of medication for livestock are recorded as well as the Danish Central Husbandry Register. All Danish one-site pig herds, active in year 2013, with >50 sows and >200 weaners were selected for the study. Initially, data were analysed using a univariable model, and secondly a multivariable linear regression model was applied. The analyses included the use of three different vaccines against Porcine Circovirus Type 2 (PCV2), Mycoplasma hyopneumoniae (M_HYO) and Lawsonia intracellularis (LAW), respectively, as well as annual production measured as number of weaners produced in a year. The antimicrobial consumption was measured in animal daily doses (ADD). Out of the 1,513 herds selected for the study, 1,415 herds had antimicrobials prescribed for gastrointestinal disorders, and 836 for respiratory disorders. PCV2 vaccine was used in 880 herds, M_HYO vaccine in 787 and LAW vaccine was the least used, with 115 herds using it. The results suggested that antimicrobials, to some extent, were being used for other disease categories than those officially prescribed by the veterinarians. On average, herds using different combinations of vaccines had higher use of antimicrobials than herds not using the vaccines. Information about vaccination protocols, health status, biosecurity, and management practices was not available, limiting the ability to assess causality. |
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