نتایج جستجو برای: poultry farm diagnosis
تعداد نتایج: 521784 فیلتر نتایج به سال:
UNLABELLED To assess diversity of Salmonella enterica serotypes present in poultry and their environment from southern Brazil, the Kauffmann-White-Le Minor (KWL) scheme was used to serotype a total of 155 isolates. Isolates were then re-examined with nested PCR and sequencing of the dkgB-linked intergenic sequence ribotyping (ISR) region that assesses single nucleotide polymorphisms occurring a...
OBJECTIVE To identify the risk factors and source of infection leading to human infections with the Influenza A(H7N9) virus in urban and rural areas. METHODS We conducted a case-control investigation to identify potential exposures and risk factors. Controls were randomly selected from the same community as the cases using random digit dialing. We used exact conditional logistic regression to...
BACKGROUND With the increased occurrence of outbreaks of H5N1 worldwide there is concern that the virus could enter commercial poultry farms with severe economic consequences. METHODOLOGY/PRINCIPAL FINDINGS We analyse data from four recent outbreaks of highly pathogenic avian influenza (HPAI) in commercial poultry to estimate the farm-to-farm reproductive number for HPAI. The reproductive num...
BACKGROUND Targeted sampling can capture the characteristics of more vulnerable sectors of a population, but may bias the picture of population level disease risk. When sampling network data, an incomplete description of the population may arise leading to biased estimates of between-host connectivity. Avian influenza (AI) control planning in Great Britain (GB) provides one example where networ...
The prevention and control of Campylobacter colonization of poultry flocks are important public health strategies for the control of human campylobacteriosis. A critical review of the literature on interventions to control Campylobacter in poultry on farms was undertaken using a systematic approach. Although the focus of the review was on aspects appropriate to the United Kingdom poultry indust...
Live poultry markets are a source of human infection with avian influenza A (H7N9) virus. On February 21, 2014, a poultry farmer infected with H7N9 virus was identified in Jilin, China, and H7N9 and H9N2 viruses were isolated from the patient's farm. Reassortment between these subtype viruses generated five genotypes, one of which caused the human infection. The date of H7N9 virus introduction ...
Technical Bulletin 1 ı As the poultry industry has grown, so have concerns about environmental management aspects, including air and water quality. There is a growing concern related to ammonia emission from poultry operations. Ammonia is a colorless, lighter than air, highly water-soluble gas present in the atmosphere of every poultry house. Ammonia volatilization from poultry litter commonly ...
The detection of Salmonella in primary poultry production is an issue of great concern in the European Union (EU), since control of this zoonotic disease is in part based on the reduction of the prevalence at the farm level. Success of detection is likely to be highly dependent on the choice of an adequate sampling procedure combined with a sensitive culture method. In poultry farms 'naturally ...
An investigation of poultry litter intended for use in farm feeds showed that 0,37%, 0,49%, 0,25% and 12,3% of the 813 samples tested were contaminated with Clostridium spp., haemolytic Escherichia coli, Staphylococcus aureus and 21 different species of Salmonella. The findings clearly underline the hygienically dangerous nature of crude poultry litter. The practical implications of the results...
In poultry several Chlamydia species have been detected, but Chlamydia psittaci and Chlamydia gallinacea appear to be most prevalent and important. Chlamydia psittaci is a well-known zoonosis and is considered to be a pathogen of poultry. Chlamydia gallinacea has been described more recently. Its avian pathogenicity and zoonotic potential have to be further elucidated. Within the Netherlands no...
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