{"id":3540,"date":"2012-01-01T08:00:42","date_gmt":"2012-01-01T08:00:42","guid":{"rendered":"https:\/\/dwhc.wp.hum.uu.nl\/2012\/01\/01\/avian-tuberculosis-in-a-great-crested-grebe-podiceps-cristatus\/"},"modified":"2021-11-09T14:43:20","modified_gmt":"2021-11-09T14:43:20","slug":"avian-tuberculosis-in-a-great-crested-grebe-podiceps-cristatus","status":"publish","type":"post","link":"https:\/\/dwhc-dev.wp.hum.uu.nl\/en\/2012\/01\/avian-tuberculosis-in-a-great-crested-grebe-podiceps-cristatus\/","title":{"rendered":"Avian tuberculosis in a great crested grebe (Podiceps cristatus)<\/i>"},"content":{"rendered":"
\"fuut

Podiceps cristatus<\/em>, volwassene met kuikens.
(Photo, M. Mollet, Saxifraga)<\/p><\/div>\n

In June 2011 an adult male great crested grebe (Podiceps cristatus<\/em>)\u00a0found in the Dutch coastal town of\u00a0Muidenberg, was submitted to the DWHC for post-mortem investigation.<\/p>\n

Macroscopic findings<\/h3>\n

The bird had a moderately good nutritional status\u00a0with reasonable fat reserves and poorly developed musculature. The gastrointestinal tract\u00a0contained green pasty material, indicating that it had eaten shortly before its death.<\/p>\n

Large numbers of well-circumscribed firm yellow nodules of 1-3x7mm were found in the lungs (photo 2), liver, intestines and gizzard and the spleen was almost completely replaced by this material\u00a0(photo 3).<\/p>\n\n\n\n\n
\"Longen<\/td>\n<\/tr>\n
Photo 2 (links): Longen van de fuut ; Photo 3 (rechts): milt van de fuut<\/em>
\nPhotos: L. Begeman, DWHC<\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Microscopic findings<\/h3>\n

An impression smear from these lesions showed large numbers of macrophages characteristic of a granulomatous inflammation; these cells contained\u00a0“ghost<\/em>” (non-staining) bacteria.<\/p>\n

Examination of the tissues under the microscope revealed granulomas in multiple organs and the muscles. The ghost bacteria in the macrophages were stained\u00a0using special techniques\u00a0(Ziehl-Neelsen) to demonstrate acid-fast organisms (photo 4), consistent with Mycobacteria.<\/p>\n

 <\/p>\n\n\n\n\n
\u00a0\"zuurvaste<\/td>\nImpression smear of the acid-fast or ‘ghost’ bacteria seen in macrophages in the lesions. Mycobacteria are not the only acid-fast bacteria; others include Nocardia, some bacterial\u00a0spores, and some coccidia. Whilst highly suggestive of mycobacterial infection, this can only be confirmed with culture or molecular techniques. \u00a0\u00a0<\/em><\/td>\n<\/tr>\n
\u00a0Photo 4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Laboratory tests<\/h3>\n

Mycobacterium avium<\/em> complex was confirmed by bacterial culture carried out at the\u00a0Central Veterinary Institute of Wageningen UR.<\/p>\n

Conclusion<\/h3>\n

The great crested grebe appear to have died from advanced, systemic avian tuberculosis.<\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

In June 2011 an adult male great crested grebe (Podiceps cristatus)\u00a0found in the Dutch coastal town of\u00a0Muidenberg, was submitted to the DWHC for post-mortem investigation. Macroscopic findings The bird had a moderately good nutritional status\u00a0with reasonable fat reserves and poorly developed musculature. The gastrointestinal tract\u00a0contained green pasty material, indicating that it had eaten shortly before […]<\/p>\n","protected":false},"author":20161,"featured_media":65,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[312],"tags":[],"diersoorten":[310,353],"class_list":["post-3540","post","type-post","status-publish","has-post-thumbnail","hentry","category-research-results","diersoorten-birds","diersoorten-great-crested-grebe-en"],"acf":[],"_links":{"self":[{"href":"https:\/\/dwhc-dev.wp.hum.uu.nl\/en\/wp-json\/wp\/v2\/posts\/3540","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dwhc-dev.wp.hum.uu.nl\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dwhc-dev.wp.hum.uu.nl\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dwhc-dev.wp.hum.uu.nl\/en\/wp-json\/wp\/v2\/users\/20161"}],"replies":[{"embeddable":true,"href":"https:\/\/dwhc-dev.wp.hum.uu.nl\/en\/wp-json\/wp\/v2\/comments?post=3540"}],"version-history":[{"count":1,"href":"https:\/\/dwhc-dev.wp.hum.uu.nl\/en\/wp-json\/wp\/v2\/posts\/3540\/revisions"}],"predecessor-version":[{"id":6111,"href":"https:\/\/dwhc-dev.wp.hum.uu.nl\/en\/wp-json\/wp\/v2\/posts\/3540\/revisions\/6111"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dwhc-dev.wp.hum.uu.nl\/en\/wp-json\/wp\/v2\/media\/65"}],"wp:attachment":[{"href":"https:\/\/dwhc-dev.wp.hum.uu.nl\/en\/wp-json\/wp\/v2\/media?parent=3540"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dwhc-dev.wp.hum.uu.nl\/en\/wp-json\/wp\/v2\/categories?post=3540"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dwhc-dev.wp.hum.uu.nl\/en\/wp-json\/wp\/v2\/tags?post=3540"},{"taxonomy":"diersoorten","embeddable":true,"href":"https:\/\/dwhc-dev.wp.hum.uu.nl\/en\/wp-json\/wp\/v2\/diersoorten?post=3540"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}