Incidental Mycobacterium-induced granulomatous inflammation of the follicular pharyngeal tonsils in a South African farmed ostrich (Struthio camelus)

dc.contributor.authorCrole, Martina Rachel
dc.contributor.authorSoley, John Thomson
dc.contributor.authorClift, Sarah Jane
dc.contributor.emailmartina.crole@up.ac.zaen
dc.date.accessioned2014-02-27T06:18:27Z
dc.date.available2014-02-27T06:18:27Z
dc.date.issued2013-10-30
dc.description.abstractAvian mycobacteriosis (AM) is a zoonotic disease caused by Mycobacterium avium complex (MAC), which can spread from avians to other farmed animals such as cattle and pigs as well as to humans. This study is the first report of granulomatous inflammation, as a result of avian mycobacteriosis, in the follicular pharyngeal tonsils of a farmed ostrich. The head of an apparently healthy farmed adult ostrich was obtained after slaughter. Each pharyngeal fold displayed a large tissue mass. This tissue was routinely prepared for light microscopy and stained with haematoxylin and eosin, periodic acid Schiff, Grocott methenamine silver, Gram and Ziehl-Neelsen. Immunohistochemistry (IHC) and polymerase chain reaction (PCR) were performed to identify Mycobacterium spp. and Mycobacterium tuberculosis complex, respectively. Histologically, the tissue masses consisted of confluent mature micro-granulomata that were characterised by central caseous necrosis surrounded by multinucleated giant cells, macrophages and lymphoid cells and an outer mature fibrous connective tissue capsule. Within some foci of caseous necrosis were variably sized colonies of small, Gram-negative, acid-fast bacilli, which showed positive IHC labelling for Mycobacterium spp., leading to a presumptive diagnosis of AM. PCR thus proved useful in excluding the presence of notifiable Mycobacterium spp. The significance and role of the pharyngeal tonsils of ratites in diseases such as AM warrant specific attention. Moreover, as ratites are known to present with AM infections with apparently no visible loss in body condition, as presumably occurred in the present case, it is imperative that unusual masses in apparently healthy ratites be thoroughly investigated.en
dc.description.librarianam2014en
dc.description.librarianab2014
dc.description.sponsorshipThe Faculty of Veterinary Science, University of Pretoriaen
dc.description.urihttp://www.jsava.co.zaen
dc.identifier.citationCrole, C.R., Soley J.T. & Clift, S.J., 2013, ‘Incidental Mycobacterium-induced granulomatous inflammation of the follicular pharyngeal tonsils in a South African farmed ostrich (Struthio camelus)’, Journal of the South African Veterinary Association 84(1), Art. #961, 9 pages. http://dx.DOI.org/ 10.4102/jsava.v84i1.961en
dc.identifier.issn0038-2809 (print)
dc.identifier.issn2224-9435 (online)
dc.identifier.other10.4102/jsava.v84i1.961
dc.identifier.other6701816856
dc.identifier.other36143778600
dc.identifier.otherG-9839-2014
dc.identifier.urihttp://hdl.handle.net/2263/36825
dc.language.isoenen
dc.publisherOpenJournals Publishingen
dc.rights© 2013. The Authors. Licensee: AOSIS OpenJournals. This work is licensed under the Creative Commons Attribution License.en
dc.subjectMycobacterium spp.en
dc.subjectAvian mycobacteriosisen
dc.subjectSouth Africaen
dc.subjectStruthio camelusen
dc.subjectZoonotic diseasesen
dc.subjectUCTDen_US
dc.subject.lcshOstrichesen
dc.subject.lcshMycobacteriumen
dc.subject.lcshTonsilsen
dc.titleIncidental Mycobacterium-induced granulomatous inflammation of the follicular pharyngeal tonsils in a South African farmed ostrich (Struthio camelus)en
dc.typeArticleen

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