Prevalence At Slaughter
Mostrando 13-24 de 25 artigos, teses e dissertações.
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13. Prevalência de Campylobacter spp. e Enterococcus spp. no ambiente de criação de frango de corte / Prevalence of Campylobacter spp. and Enterococcus spp. in rearing environment of broiler-farm
Last decades, the interest on food safety has grown. Thus, the control of microorganisms such as Campylobacter e Enterococcus at broiler farm has been seen as crucial to reduce zoonosis from meat. The aims of this study were to realise the characterisation of rearing birds broiler farm; to evaluate the microbiological quality of rearing bird environment from
Publicado em: 2006
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14. Longitudinal Study of Salmonella enterica Serotype Typhimurium Infection in Three Danish Farrow-to-Finish Swine Herds
A longitudinal study of the infection dynamics of Salmonella enterica was carried out with three Danish farrow-to-finish swine herds. To account for variations in Salmonella shedding over time, litters from each herd were divided into two cohorts. Each cohort consisted of 30 pigs, for a total of 180 pigs. Pigs were individually monitored by monthly bacteriol
American Society for Microbiology.
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15. Concentration and Prevalence of Escherichia coli O157 in Cattle Feces at Slaughter
The concentration and prevalence of Escherichia coli O157 in cattle feces at the time of slaughter was studied over a 9-week period from May to July 2002. Fecal samples (n = 589) were collected from the rectums of slaughtered cattle, and the animal-level prevalence rate was estimated to be 7.5% (95% confidence interval [CI], 5.4 to 9.6%) while the group prev
American Society for Microbiology.
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16. Serotyping of Pasteurella multocida isolated from swine lungs collected at slaughter.
We serotyped 222 Pasteurella multocida strains isolated from swine lungs at slaughter. Capsular serotypes A and D were determined by the hyaluronidase sensitivity and acriflavin agglutination tests, respectively. Somatic antigens were determined by gel diffusion against standard antisera. Capsular serotype A was found in 97.3% of the strains and serotype D i
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17. Correlation of enterohemorrhagic Escherichia coli O157 prevalence in feces, hides, and carcasses of beef cattle during processing
A survey was performed to estimate the frequency of enterohemorrhagic Escherichia coli O157:H7 or O157:nonmotile (EHEC O157) in feces and on hides within groups of fed cattle from single sources (lots) presented for slaughter at meat processing plants in the Midwestern United States, as well as frequency of carcass contamination during processing from cattle
The National Academy of Sciences.
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18. Mycobacterium paratuberculosis cultured from milk and supramammary lymph nodes of infected asymptomatic cows.
Milk and supramammary lymph node samples were obtained from asymptomatic cows infected with Mycobacterium paratuberculosis at the time of slaughter. Of 81 supramammary lymph node samples, 22 (27%) were culture positive for M. paratuberculosis. Of 77 milk samples, 9 (11.6%) were culture positive. The prevalence of supramammary lymph node or milk infection was
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19. Salmonella enterica Infections in Market Swine with and without Transport and Holding
The objective of this study was to compare, by using identical sample types, the Salmonella enterica prevalences and serovar diversities between pigs necropsied on the farm and those necropsied at the abattoir after transport and holding. We necropsied 567 market weight pigs (>70 kg) from six herds. Pigs were alternately assigned to be necropsied on the farm
American Society for Microbiology.
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20. Prevalence of Mycobacterium avium in Slaughter Pigs in The Netherlands and Comparison of IS1245 Restriction Fragment Length Polymorphism Patterns of Porcine and Human Isolates
A significant increase in the incidence of caseous lesions in the lymph nodes of slaughter pigs prompted a large-scale investigation in five slaughterhouses in The Netherlands. In total, 158,763 pigs from 2,899 groups underwent gross examination. At least one pig with caseous lesions in the submaxillary and/or mesenteric lymph nodes was observed in each of 1
American Society for Microbiology.
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21. Characterization of Escherichia coli O157:H7 from Downer and Healthy Dairy Cattle in the Upper Midwest Region of the United States
While cattle in general have been identified as a reservoir of Escherichia coli O157:H7, there are limited data regarding the prevalence and clonality of this pathogen in downer dairy cattle and the potential impact to human health that may occur following consumption of meat derived from downer dairy cattle. In the present study, conducted at two slaughter
American Society for Microbiology.
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22. Development of a Combined Selection and Enrichment PCR Procedure for Clostridium botulinum Types B, E, and F and Its Use To Determine Prevalence in Fecal Samples from Slaughtered Pigs
A specific and sensitive combined selection and enrichment PCR procedure was developed for the detection of Clostridium botulinum types B, E, and F in fecal samples from slaughtered pigs. Two enrichment PCR assays, using the DNA polymerase rTth, were constructed. One assay was specific for the type B neurotoxin gene, and the other assay was specific for the
American Society for Microbiology.
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23. Effects of Climate on Incidence of Campylobacter spp. in Humans and Prevalence in Broiler Flocks in Denmark
Campylobacter infections are increasing and pose a serious public health problem in Denmark. Infections in humans and broiler flocks show similar seasonality, suggesting that climate may play a role in infection. We examined the effects of temperature, precipitation, relative humidity, and hours of sunlight on Campylobacter incidence in humans and broiler fl
American Society for Microbiology.
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24. Porcine Parvovirus: Natural and Experimental Infections of the Porcine Fetus and Prevalence In Mature Swine 1
Antibodies against porcine parvovirus were detected in 17 of 116 prenursing pig sera. Antibodies against transmissible gastroenteritis or ECPO-6 (an enterovirus) were not detected in prenursing sera of the pigs tested. Seventy-seven percent of 129 serum samples from 23 Ohio farms and 82% of 96 samples from slaughter plants in Ohio were serologically positive