Avian mycobacteriosis in free-living raptors in California: 6 Cases (1997-2001)

Lisa A Tell, Shannon T. Ferrell, Paul M. Gibbons

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Avian mycobacteriosis has been documented commonly in poultry, companion birds, and birds in zoological collections or wildlife parks. However, reports in free-ranging raptors are relatively rare. We describe 6 cases of mycobacteriosis in free-living raptors. Four red-tailed hawks (Buteo jamaicensis), 1 red-shouldered hawk (Buteo lineatus), and 1 great horned owl (Bubo virginianus) were presented for examination after being found on the ground unable to fly. Common clinical findings in these birds included coelomic distention or palpable coelomic mass, nonregenerative anemia, and leukocytosis characterized by heterophilia, monocytosis, and lymphopenia. Results of radiography, ultrasonography, coelomoscopy, and biopsy, in combination with acid-fast staining of specimens obtained by biopsy or fine-needle aspiration, provided evidence of a presumptive diagnosis of mycobacteriosis. All birds were euthanatized (n = 5) or died (n = 1). At necropsy, diffuse granulomas with intralesional acid-fast bacilli were present in all birds. Mycobacteriosis was confirmed by culture in 4 birds, and polymerase chain reaction testing confirmed Mycobacterium avium in 3 of these 4 birds. On the basis of clinical and postmortem findings, mycobacteriosis should be considered as a differential diagnosis in adult raptors that are found debilitated and in poor body condition. Detection of acid-fast bacilli in biopsy or necropsy specimens allows a presumptive diagnosis of mycobacteriosis; however, definitive diagnosis requires mycobacterial culture or polymerase chain reaction analysis.

Original languageEnglish (US)
Pages (from-to)30-40
Number of pages11
JournalJournal of Avian Medicine and Surgery
Volume18
Issue number1
StatePublished - Mar 2004

Fingerprint

Raptors
mycobacterial diseases
birds of prey
Birds
birds
Hawks
Bubo virginianus
Buteo jamaicensis
biopsy
Bacillus
Acids
acids
necropsy
polymerase chain reaction
Strigiformes
Biopsy
Mycobacterium avium
Polymerase Chain Reaction
Buteo
Lymphopenia

ASJC Scopus subject areas

  • veterinary(all)

Cite this

Avian mycobacteriosis in free-living raptors in California : 6 Cases (1997-2001). / Tell, Lisa A; Ferrell, Shannon T.; Gibbons, Paul M.

In: Journal of Avian Medicine and Surgery, Vol. 18, No. 1, 03.2004, p. 30-40.

Research output: Contribution to journalArticle

@article{f463ab78846c43ab9eb3d9b60669e6c1,
title = "Avian mycobacteriosis in free-living raptors in California: 6 Cases (1997-2001)",
abstract = "Avian mycobacteriosis has been documented commonly in poultry, companion birds, and birds in zoological collections or wildlife parks. However, reports in free-ranging raptors are relatively rare. We describe 6 cases of mycobacteriosis in free-living raptors. Four red-tailed hawks (Buteo jamaicensis), 1 red-shouldered hawk (Buteo lineatus), and 1 great horned owl (Bubo virginianus) were presented for examination after being found on the ground unable to fly. Common clinical findings in these birds included coelomic distention or palpable coelomic mass, nonregenerative anemia, and leukocytosis characterized by heterophilia, monocytosis, and lymphopenia. Results of radiography, ultrasonography, coelomoscopy, and biopsy, in combination with acid-fast staining of specimens obtained by biopsy or fine-needle aspiration, provided evidence of a presumptive diagnosis of mycobacteriosis. All birds were euthanatized (n = 5) or died (n = 1). At necropsy, diffuse granulomas with intralesional acid-fast bacilli were present in all birds. Mycobacteriosis was confirmed by culture in 4 birds, and polymerase chain reaction testing confirmed Mycobacterium avium in 3 of these 4 birds. On the basis of clinical and postmortem findings, mycobacteriosis should be considered as a differential diagnosis in adult raptors that are found debilitated and in poor body condition. Detection of acid-fast bacilli in biopsy or necropsy specimens allows a presumptive diagnosis of mycobacteriosis; however, definitive diagnosis requires mycobacterial culture or polymerase chain reaction analysis.",
author = "Tell, {Lisa A} and Ferrell, {Shannon T.} and Gibbons, {Paul M.}",
year = "2004",
month = "3",
language = "English (US)",
volume = "18",
pages = "30--40",
journal = "Journal of Avian Medicine and Surgery",
issn = "1082-6742",
publisher = "Association of Avian Veterinarians",
number = "1",

}

TY - JOUR

T1 - Avian mycobacteriosis in free-living raptors in California

T2 - 6 Cases (1997-2001)

AU - Tell, Lisa A

AU - Ferrell, Shannon T.

AU - Gibbons, Paul M.

PY - 2004/3

Y1 - 2004/3

N2 - Avian mycobacteriosis has been documented commonly in poultry, companion birds, and birds in zoological collections or wildlife parks. However, reports in free-ranging raptors are relatively rare. We describe 6 cases of mycobacteriosis in free-living raptors. Four red-tailed hawks (Buteo jamaicensis), 1 red-shouldered hawk (Buteo lineatus), and 1 great horned owl (Bubo virginianus) were presented for examination after being found on the ground unable to fly. Common clinical findings in these birds included coelomic distention or palpable coelomic mass, nonregenerative anemia, and leukocytosis characterized by heterophilia, monocytosis, and lymphopenia. Results of radiography, ultrasonography, coelomoscopy, and biopsy, in combination with acid-fast staining of specimens obtained by biopsy or fine-needle aspiration, provided evidence of a presumptive diagnosis of mycobacteriosis. All birds were euthanatized (n = 5) or died (n = 1). At necropsy, diffuse granulomas with intralesional acid-fast bacilli were present in all birds. Mycobacteriosis was confirmed by culture in 4 birds, and polymerase chain reaction testing confirmed Mycobacterium avium in 3 of these 4 birds. On the basis of clinical and postmortem findings, mycobacteriosis should be considered as a differential diagnosis in adult raptors that are found debilitated and in poor body condition. Detection of acid-fast bacilli in biopsy or necropsy specimens allows a presumptive diagnosis of mycobacteriosis; however, definitive diagnosis requires mycobacterial culture or polymerase chain reaction analysis.

AB - Avian mycobacteriosis has been documented commonly in poultry, companion birds, and birds in zoological collections or wildlife parks. However, reports in free-ranging raptors are relatively rare. We describe 6 cases of mycobacteriosis in free-living raptors. Four red-tailed hawks (Buteo jamaicensis), 1 red-shouldered hawk (Buteo lineatus), and 1 great horned owl (Bubo virginianus) were presented for examination after being found on the ground unable to fly. Common clinical findings in these birds included coelomic distention or palpable coelomic mass, nonregenerative anemia, and leukocytosis characterized by heterophilia, monocytosis, and lymphopenia. Results of radiography, ultrasonography, coelomoscopy, and biopsy, in combination with acid-fast staining of specimens obtained by biopsy or fine-needle aspiration, provided evidence of a presumptive diagnosis of mycobacteriosis. All birds were euthanatized (n = 5) or died (n = 1). At necropsy, diffuse granulomas with intralesional acid-fast bacilli were present in all birds. Mycobacteriosis was confirmed by culture in 4 birds, and polymerase chain reaction testing confirmed Mycobacterium avium in 3 of these 4 birds. On the basis of clinical and postmortem findings, mycobacteriosis should be considered as a differential diagnosis in adult raptors that are found debilitated and in poor body condition. Detection of acid-fast bacilli in biopsy or necropsy specimens allows a presumptive diagnosis of mycobacteriosis; however, definitive diagnosis requires mycobacterial culture or polymerase chain reaction analysis.

UR - http://www.scopus.com/inward/record.url?scp=3042737274&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=3042737274&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:3042737274

VL - 18

SP - 30

EP - 40

JO - Journal of Avian Medicine and Surgery

JF - Journal of Avian Medicine and Surgery

SN - 1082-6742

IS - 1

ER -