title: Bacterial osteomyelitis in a 3-week-old broiler chicken associated with Enterococcus hirae.
abstract: Enterococcus hirae infections are reported to cause growth depression, encephalomalacia, endocarditis, and septicemia in chickens. This report describes osteomyelitis in the proximal femur of a 3-week-old broiler chicken that also suffered from valvular endocarditis and liver necrosis. Histologically, clusters of gram-positive coccoid bacteria were found in many organs, including bone lesions. In tissues from 5 of 6 examined chickens from the same flock, E hirae was isolated in large numbers. To the authors' knowledge, this is the first report of spontaneous bacterial osteomyelitis where E hirae was cultured from bone and where coccoid bacteria consistent with Enterococcus spp were simultaneously demonstrated within bone lesions.
authors.affiliation: National Veterinary Institute, Department of Animal Health, Section for Pathology, Oslo, Norway. oyvor.kolbjornsen@vetinst.no
authors.forename: Ø
authors.initials: Ø
authors.lastname: Kolbjørnsen
authors.forename: B
authors.initials: B
authors.lastname: David
authors.forename: M
authors.initials: M
authors.lastname: Gilhuus
mesh_terms: D000667:Ampicillin / Q000494:pharmacology; D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology; D015373:Bacterial Typing Techniques / Q000662:veterinary; D002645:Chickens / Q000382:microbiology*; D004269:DNA, Bacterial / Q000235:genetics; D004275:DNA, Ribosomal / Q000235:genetics; D004697:Endocarditis, Bacterial / Q000453:epidemiology / Q000382:microbiology / Q000473:pathology / Q000662:veterinary*; D016983:Enterococcus / Q000187:drug effects / Q000235:genetics / Q000302:isolation & purification*; D016908:Gram-Positive Bacterial Infections / Q000453:epidemiology / Q000382:microbiology / Q000473:pathology / Q000662:veterinary*; D009664:Norway / Q000453:epidemiology; D010019:Osteomyelitis / Q000453:epidemiology / Q000382:microbiology / Q000473:pathology / Q000662:veterinary*; D011201:Poultry Diseases / Q000453:epidemiology / Q000382:microbiology* / Q000473:pathology; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA / Q000662:veterinary; D013752:Tetracycline / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S; D000667:Ampicillin; D013752:Tetracycline