Virulence of South African isolates of Haemophilus paragallinarum. Part 2: Naturally occurring NAD-independent field isolates
| dc.contributor.author | Bragg, R.R. (Robert Richard) | |
| dc.contributor.editor | Boomker, Jacob Diederik Frederik | |
| dc.date.accessioned | 2012-02-28T07:57:48Z | |
| dc.date.available | 2012-02-28T07:57:48Z | |
| dc.date.created | 2012 | |
| dc.date.issued | 2002 | |
| 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. | en |
| 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. | en |
| 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 | |
| dc.identifier.uri | http://hdl.handle.net/2263/18256 | |
| dc.language | en | |
| dc.publisher | Published jointly by the Agricultural Research Council, ARC-Onderstepoort Veterinary Institute and the Faculty of Veterinary Science, University of Pretoria. | en |
| dc.rights | © ARC-Onderstepoort and Faculty of Veterinary Science, University of Pretoria (original). © University of Pretoria. Dept of Library Services (digital). | en |
| dc.subject | Veterinary medicine | en |
| dc.subject | Haemophilus paragallinarum | en |
| dc.subject | NAD-independence | en |
| dc.subject | Virulence | en |
| dc.subject.lcsh | Veterinary medicine -- South Africa | |
| dc.subject.lcsh | Haemophilus parainfluenzae | en |
| dc.subject.lcsh | Haemophilus -- South Africa | en |
| dc.title | Virulence of South African isolates of Haemophilus paragallinarum. Part 2: Naturally occurring NAD-independent field isolates | en |
| dc.type | Article | en |