dc.contributor.author |
Bragg, R.R. (Robert Richard)
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dc.contributor.editor |
Boomker, Jacob Diederik Frederik |
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dc.date.accessioned |
2012-02-28T07:57:48Z |
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dc.date.available |
2012-02-28T07:57:48Z |
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dc.date.created |
2012 |
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dc.date.issued |
2002 |
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dc.description |
The articles have been scanned in colour with a HP Scanjet 5590; 600dpi.
Adobe Acrobat v.9 was used to OCR the text and also for the merging and conversion to the final presentation PDF-format. |
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dc.description.abstract |
Naturally occurring NAD-independent variants of Haemophilus paragallinarum, which have been isolates from poultry showing clinical signs of infectious coryza, were used to determine their virulence using a newly developed challenge model for infectious coryza. It was established that the NAD-independent isolates belonging to a particular serogroup, were less virulent when compared to the virulence of the NAD-dependent isolates from the same serogroup. It was shown that the virulence of the NAD-independent isolates belonging to serogroup C and serogroup A were very similar to each other. This differs to the results obtained with NAD-dependent isolates reported on previously, in which the serogroup C isolates were found to be more virulent then the serogroup A isolates. |
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dc.description.librarian |
mn2012 |
en |
dc.description.sponsorship |
NRF. ImmunoVet Services. |
en |
dc.identifier.citation |
Bragg, RR 2002, 'Virulence of South African isolates of Haemophilus paragallinarum. Part 2: Naturally occurring NAD-independent field isolates’. Onderstepoort Journal of Veterinary Research, vol. 69, no. 2, pp. 171-175. |
en |
dc.identifier.issn |
0030-2465 |
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dc.identifier.uri |
http://hdl.handle.net/2263/18256 |
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dc.language |
en |
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dc.publisher |
Published jointly by the Agricultural Research Council, ARC-Onderstepoort Veterinary Institute and the Faculty of Veterinary Science, University of Pretoria. |
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dc.rights |
© ARC-Onderstepoort and Faculty of Veterinary Science, University of Pretoria (original).
© University of Pretoria. Dept of Library Services (digital). |
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dc.subject |
Veterinary medicine |
en |
dc.subject |
Haemophilus paragallinarum |
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dc.subject |
NAD-independence |
en |
dc.subject |
Virulence |
en |
dc.subject.lcsh |
Veterinary medicine -- South Africa |
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dc.subject.lcsh |
Haemophilus parainfluenzae |
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dc.subject.lcsh |
Haemophilus -- South Africa |
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dc.title |
Virulence of South African isolates of Haemophilus paragallinarum. Part 2: Naturally occurring NAD-independent field isolates |
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dc.type |
Article |
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