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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
immunology and microbiology
Relationships among Pasteurellaceae isolated from free ranging chickens and their animal contacts as determined by quantitative phenotyping, ribotyping and REA-typing
Veterinary Microbiology, Volume 78, No. 2, Year 2001
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Description
One hundred and forty-three Pasteurella spp. strains and 10 unclassified strains obtained from free ranging poultry, dogs and cats were investigated by extended phenotypic characterization. One hundred and forty-nine of these strains were selected for further studies using ribotyping and REA-typing to evaluate the role of dogs and cats in Pasteurella multocida transmission. Seven and six type strains were included for comparison in phenotyping and genotyping, respectively. Eleven clusters and six unclustered strains were revealed by phenotyping. Ribotyping outlined 12 clusters and six unclustered strains. A correlation between clusters obtained by phenotyping and ribotyping was demonstrated which indicated that a genetic basis exists for clusters outlined by quantitative evaluation of phenotypic data. Similarities and differences in hosts, phenotype, ribotype, and zone of isolation were demonstrated among Pasteurella strains investigated. Isolates of P. multocida from ducks were shown to be clonal by both phenotyping and ribotyping. These strains were identical to one of the chickens strains. REA-typing, however, showed that the chicken strain was different underlining that exchange of clones of P. multocida between avian species rarely happens under village conditions. Management practise in the villages suggest the potential for exchange of P. multocida between poultry and animals kept in contact. The present findings, however, did not indicate that clones of P. multocida are widely exchanged between poultry and other animal species, even though close contact exists. In the present investigation exchange of clones of P. multocida was only demonstrated among animals belonging to the same species. Caution is drawn to the use of ribotyping as the sole method for epidemiological typing and tracing of P. multocida. The present results also underline the importance of proper phenotyping in the identification of P. multocida and related species. © 2001 Elsevier Science B.V.
Authors & Co-Authors
Muhairwa, Amandus Pachificus
Tanzania, Morogoro
Sokoine University of Agriculture
Denmark, Frederiksberg
Det Natur- og Biovidenskabelige Fakultet
Christensen, Jens Peter
Denmark, Frederiksberg
Det Natur- og Biovidenskabelige Fakultet
Bisgaard, Magne
Denmark, Frederiksberg
Det Natur- og Biovidenskabelige Fakultet
Statistics
Citations: 36
Authors: 3
Affiliations: 2
Identifiers
Doi:
10.1016/S0378-1135(00)00295-9
ISSN:
03781135
Research Areas
Genetics And Genomics
Study Approach
Quantitative