{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,27]],"date-time":"2026-09-27T12:51:08Z","timestamp":1790513468761,"version":"4.1.0"},"reference-count":30,"publisher":"Akademiai Kiado Zrt.","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2011,3,1]]},"abstract":"<jats:p><jats:italic>Enterococcus cecorum<\/jats:italic>is the most frequently occurring enterococcal species in the intestine of chickens of over 12 weeks of age, and there are few reports on its isolation from the skeleton of broiler parent chicks. In the present study, observations on vertebral osteomyelitis and spondylolisthesis (\u2018kinky back syndrome\u2019) showing high incidence in 8 broiler parent flocks in different parts of Hungary are summarised. Clinical signs were seen only in roosters between 5 and 13 weeks of age. Diseased birds were alert and remained sitting on their hocks with their feet slightly raised off the ground. Incidence of the disease among male birds ranged from 8% to 30% depending on flocks. Enlargement and distortion of the body of the 6th vertebra were seen as the main pathological lesions. The cavity of the spinal canal was constricted by the distorted vertebral bodies. Resorption of bone tissue and sequestrum formation, signs of increased osteoclast activity, proliferation of fibrotic tissues, infiltration with heterophils and formation of sclerotic layers were detected in the vertebral bodies. From all 24 samples collected from the vertebral lesions,<jats:italic>Enterococcus cecorum<\/jats:italic>was isolated and identified using metabolic fingerprinting as well as 16S rRNA gene sequencing. Demonstration of<jats:italic>E. cecorum<\/jats:italic>from the vertebral lesions in all examined broiler breeder roosters showing the same clinical and pathological findings in different flocks suggested the pathogenic role of this microorganism for the first time in Hungary.<\/jats:p>","DOI":"10.1556\/avet.59.2011.1.2","type":"journal-article","created":{"date-parts":[[2011,3,2]],"date-time":"2011-03-02T15:54:14Z","timestamp":1299081254000},"page":"11-21","source":"Crossref","is-referenced-by-count":56,"title":["Association of Enterococcus cecorum with vertebral osteomyelitis and spondylolisthesis in broiler parent chicks"],"prefix":"10.1556","volume":"59","author":[{"given":"L\u00e1szl\u00f3","family":"Makrai","sequence":"first","affiliation":[{"name":"1 Szent Istv\u00e1n University Department of Microbiology and Infectious Diseases, Faculty of Veterinary Sciences Hung\u00e1ria krt. 23-25 H-1143 Budapest Hungary"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Csaba","family":"Nemes","sequence":"additional","affiliation":[{"name":"2 Division of Pathology of Kaposv\u00e1r Central Agricultural Office, Veterinary Diagnostic Directorate Kaposv\u00e1r Hungary"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anna","family":"Simon","sequence":"additional","affiliation":[{"name":"3 Private Veterinarian B\u00e1bolna Hungary"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"\u00c9va","family":"Ivanics","sequence":"additional","affiliation":[{"name":"4 Laboratory of Poultry Pathology Central Agricultural Office, Veterinary Diagnostic Directorate Budapest Hungary"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zolt\u00e1n","family":"Dud\u00e1s","sequence":"additional","affiliation":[{"name":"5 Private Veterinarian \u00d3cs\u00e1rd Hungary"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"L\u00e1szl\u00f3","family":"Fodor","sequence":"additional","affiliation":[{"name":"1 Szent Istv\u00e1n University Department of Microbiology and Infectious Diseases, Faculty of Veterinary Sciences Hung\u00e1ria krt. 23-25 H-1143 Budapest Hungary"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R\u00f3bert","family":"Gl\u00e1vits","sequence":"additional","affiliation":[{"name":"6 Laboratory of Mammalian Pathology and Histopathology Central Agricultural Office, Veterinary Diagnostic Directorate Budapest Hungary"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"425","reference":[{"key":"1","unstructured":"Bacterial Nomenclature Up-to-date (2010): Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Braunschweig, Germany, October 2010, <a href=\"http:\/\/www.dsmz.de\/microorganisms\/main.php?contentleft_id=14\">http:\/\/www.dsmz.de\/microorganisms\/main.php?contentleft_id=14<\/a>"},{"key":"2","doi-asserted-by":"crossref","first-page":"348","DOI":"10.1046\/j.1365-2672.2002.01537.x","article-title":"Composition of enterococcal and streptococcal flora from pigeon intestines","volume":"92","author":"Baele M.","year":"2002","journal-title":"J. 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