Comparative costs and methods for assessing production impact of common swine diseases
The pathogenesis of a disease determines the kind and extend of production loss. Each disease may involve one or several of the following mechanisms, which reduce efficiency: anorexia or perverted appetite, fever, tissue destruction, lack of production of a normal product or metabolite, production of a toxin, and physical exertion. While the pathogenesis of a disease is fairly consistent, clinical expression of disease in a herd varies with the farm, management, and environment. Therefore, it is not possible to determine a "universal cost" of a disease; rather, it is posible to establish a method for calculating the cost of a disease within the herd of interest. Four general categories of disease exist, according to their mechanisms of efficiency reduction. Within each category, the cost of disease is determined by using specific formulas that include the following parameters: prevalence, severity, mortality, growth rate, cost of feed, price at market, and overhead costs. Ranges of costs of 14 common swine diseases and methods of calculating specific costs for one farm are discussed
| Main Authors: | , , , , , , |
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| Format: | biblioteca |
| Published: |
East Lansing, Mich. (EUA)
1987
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| Subjects: | ANALISIS ECONOMICO, CONTROL DE ENFERMEDADES, CERDO, COSTOS, |
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| Summary: | The pathogenesis of a disease determines the kind and extend of production loss. Each disease may involve one or several of the following mechanisms, which reduce efficiency: anorexia or perverted appetite, fever, tissue destruction, lack of production of a normal product or metabolite, production of a toxin, and physical exertion. While the pathogenesis of a disease is fairly consistent, clinical expression of disease in a herd varies with the farm, management, and environment. Therefore, it is not possible to determine a "universal cost" of a disease; rather, it is posible to establish a method for calculating the cost of a disease within the herd of interest. Four general categories of disease exist, according to their mechanisms of efficiency reduction. Within each category, the cost of disease is determined by using specific formulas that include the following parameters: prevalence, severity, mortality, growth rate, cost of feed, price at market, and overhead costs. Ranges of costs of 14 common swine diseases and methods of calculating specific costs for one farm are discussed |
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