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Titolo:
Serotype and genotype diversity and hatchery transmission of Campylobacterjejuni in commercial poultry flocks
Autore:
Petersen, L; Nielsen, EM; On, SLW;
Indirizzi:
Danish Vet Lab, DK-8200 Aarhus N, Denmark Danish Vet Lab Aarhus Denmark N anish Vet Lab, DK-8200 Aarhus N, Denmark Danish Vet Lab, DK-1790 Copenhagen, Denmark Danish Vet Lab Copenhagen Denmark DK-1790 b, DK-1790 Copenhagen, Denmark
Titolo Testata:
VETERINARY MICROBIOLOGY
fascicolo: 2, volume: 82, anno: 2001,
pagine: 141 - 154
SICI:
0378-1135(20010920)82:2<141:SAGDAH>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
FRAGMENT-LENGTH-POLYMORPHISM; FLAGELLIN GENE; YOUNG CHICKENS; COLI; INFECTION; CATTLE; EGGS; IDENTIFICATION; RECOMBINATION; CONTAMINATION;
Keywords:
chicken; Campylobacter jejuni; Campylobacter coli; subtyping; infection dynamics;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Petersen, L Danish Vet Lab, 2 Hangovej, DK-8200 Aarhus N, Denmark Danish Vet Lab 2 Hangovej Aarhus Denmark N Aarhus N, Denmark
Citazione:
L. Petersen et al., "Serotype and genotype diversity and hatchery transmission of Campylobacterjejuni in commercial poultry flocks", VET MICROB, 82(2), 2001, pp. 141-154

Abstract

We investigated the genotype and serotype diversity of Campylobacter coli and C jejuni in two parent flocks of adult hens and their offspring over two rotations in order to evaluate the role of hatchery mediated transmissionand/or vertical transmission of campylobacters in broiler flocks. In total, 314 C jejuni and 32 C coli isolates from parent and broiler flocks and from the surroundings of broiler houses were typed by flagellin gene PCR/RFLPfla-typing), and selected isolates were also typed by serotyping and macrorestriction profiling using PFGE (MRP/PFGE). The combined typing results showed that the broiler flocks could be colonised by 1-3 different Campylobacter clones and parent flocks could be colonised by 2-6 different clones. C coli was isolated from up to 36% of birds in one parent flock, whereas onlyC jejuni was isolated from broiler flocks. C jejuni clones from different flocks were clearly discriminated by fla-typing as well as by MRP/PFGE, except for a few cases where individual isolates belonging to two different clones were found to have altered fla-types. Similarly, one C coli clone showed pronounced fla-type variation. The present results lead to the conclusion that vertical transmission or horizontal transmission via the hatchery are not significant transmission routes of C jejuni to broiler chickens underDanish conditions. In the cases where more than one Campylobacter clone simultaneously colonised flocks, we found that the different clones coexistedin flocks rather than excluding each other. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 03:25:38