1000 resultados para Rural poultry
Resumo:
Previous studies have demonstrated that poultry-house workers are exposed to very high levels of organic dust and consequently have an increased prevalence of adverse respiratory symptoms. However, the influence of the age of broilers, on bioaerosol concentrations has not been investigated. To evaluate the evolution of bioaerosol concentration during the fattening period, bioaerosol parameters (inhalable dust, endotoxin and bacteria) were measured in 12 poultry confinement buildings in Switzerland, at 3 different stages of the birds' growth; Samples of air taken from within the breathing zones of individual poultry-house employees as they caught the chickens ready to be transported for slaughter, were also analysed. Quantitative PCR (Q-PCR) was used to assess the quantity of total airborne bacteria and total airborne Staphylococcus species. Bioaerosol levels increased significantly during the fattening period of the chickens. During the task of catching mature birds, the mean inhalable dust concentration for a worker was 31 ± 4.7 mg/m3, and endotoxin concentration was 11'080 ± 3436 UE/m3 air, more than ten-fold higher than the Swiss occupational recommended value (1000 UE/m3). The mean exposure level of bird catchers to total bacteria and Staphylococcus species measured by Q-PCR is also very high, respectively reaching values of 72 (± 11) x107 cells/m3 air and 70 (± 16) x106/m3 air. It was concluded that in the absence of wearing protective breathing apparatus, chicken catchers in Switzerland risk exposure beyond recommended limits for all measured bioaerosol parameters. Moreover, the use of Q-PCR to estimate total and specific numbers of airborne bacteria is a promising tool for evaluating any modifications intended to improve the safety of current working practices.
Resumo:
The Poultry Imported to Iowa report monthly by the Department of Agricultural.
Resumo:
The Poultry Imported to Iowa report monthly by the Department of Agricultural.
Resumo:
The Poultry Imported to Iowa report monthly by the Department of Agricultural.
Resumo:
The Poultry Imported to Iowa report monthly by the Department of Agricultural.
Resumo:
The Poultry Imported to Iowa report monthly by the Department of Agricultural.
Resumo:
The Poultry Imported to Iowa report monthly by the Department of Agricultural.
Resumo:
The Poultry Imported to Iowa report monthly by the Department of Agricultural.
Resumo:
The Poultry Imported to Iowa report monthly by the Department of Agricultural.
Resumo:
The Poultry Imported to Iowa report monthly by the Department of Agricultural.
Resumo:
The Poultry Imported to Iowa report monthly by the Department of Agricultural.
Resumo:
The Poultry Imported to Iowa report monthly by the Department of Agricultural.
Resumo:
The Poultry Imported to Iowa report monthly by the Department of Agricultural.
Resumo:
The objective of this project was to evaluate low-cost measures to reduce speeds on high-crash horizontal curves. The researchers evaluated two low-cost treatments in Iowa to determine their effectiveness in reducing speeds on rural two-lane roadways. This report summarizes how the research team selected sites and collected data, and the results. The team selected six sites. Retroreflective post treatments were added to existing chevrons at four sites and on-pavement curve markings were added at two sites. The researchers collected speed data before and after installation of the two treatments. The study compared several speed metrics to assess the effectiveness of the treatments. Overall, both were moderately effective in reducing speeds. The most significant impact of the treatments was in reducing the percentage of vehicles traveling over the posted or advisory speed by 5, 10, 15, or 20 or more mph. This result suggests that the treatments are most effective in reducing high-end speeds.
