rdf:type |
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lifeskim:mentions |
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pubmed:issue |
3
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pubmed:dateCreated |
2006-3-6
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pubmed:abstractText |
Clostridium perfringens strains (type A) isolated from an integrated poultry operation were subtyped using repetitive-element PCR with Dt primers. Isolates were obtained from fecal, egg shell, fluff, and carcass rinse samples as part of a previously reported temporally linked epidemiological survey. A total of 48 isolates of C. perfringens were obtained from different stages of the broiler chicken production chain from two separate breeder farms that supplied a single hatchery that in turn provided chicks to a single grow-out farm whose flocks were processed at a single plant. All 48 isolates were typeable (100% typeability) by repetitive-element PCR with Dt primers. This subtyping method was highly reproducible and discriminatory. By repetitive-element PCR with Dt primers, isolates were classified into four major branches with 12 subgroups or clades. The Simpson's index of discrimination was calculated to be 0.96 for groupings of >95% correlation. Toxin gene profiles of the isolates indicated that all of the isolates were C. perfringens alpha-toxin gene positive and 46 of 48 isolates were beta2-toxin gene positive. All strains were negative for beta- and epsilon-toxin genes. Repetitive sequence-based PCR was found to be a technically practical and reproducible means of subtyping C. perfringens libraries from specific epidemiological or production environment settings.
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pubmed:commentsCorrections |
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
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pubmed:status |
MEDLINE
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pubmed:month |
Mar
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pubmed:issn |
0095-1137
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:volume |
44
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1065-73
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pubmed:dateRevised |
2010-9-15
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pubmed:meshHeading |
pubmed-meshheading:16517895-Animals,
pubmed-meshheading:16517895-Bacterial Toxins,
pubmed-meshheading:16517895-Bacterial Typing Techniques,
pubmed-meshheading:16517895-Calcium-Binding Proteins,
pubmed-meshheading:16517895-Chickens,
pubmed-meshheading:16517895-Clostridium perfringens,
pubmed-meshheading:16517895-DNA, Bacterial,
pubmed-meshheading:16517895-Food Microbiology,
pubmed-meshheading:16517895-Genes, Bacterial,
pubmed-meshheading:16517895-Polymerase Chain Reaction,
pubmed-meshheading:16517895-Repetitive Sequences, Nucleic Acid,
pubmed-meshheading:16517895-Type C Phospholipases
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pubmed:year |
2006
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pubmed:articleTitle |
Molecular subtyping of poultry-associated type A Clostridium perfringens isolates by repetitive-element PCR.
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pubmed:affiliation |
Agricultural Research Service, United States Department of Agriculture, Russell Research Center, Athens, Georgia 30604-5677, USA. siragusa@saa.ars.usda.gov
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