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Results for “BIRD DISEASES”

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At least 19 recordsLinked to original sources
PubMed1996

Escherichia coli cellulitis in broiler chickens: clonal relationships among strains and analysis of virulence-associated factors of isolates from diseased birds.

Thirty-nine Escherichia coli isolates from broiler chickens with cellulitis were serotyped and analyzed for clonal relationships by multilocus enzyme electrophoresis. The isolates were further characterized with respect to hemagglutination (HA); serum resistance; antibiotic susceptibility; production of aerobactin, colicin V, and hemolysin; expression of K1 or K5 capsule; sensitivity to cloacin DF13 after treatment with diphenylamine; expression of iron-regulated outer membrane proteins; and virulence in 1-day-old chickens. In addition, the isolates were examined for the presence of DNA sequences related to F1A (fim) and P (pap) fimbriae, aerobactin synthesis (iuc) and transport (iut), hemolysin operon hly, and TraT lipoprotein-induced serum resistance (traT). Only 38.4% of the isolates were typeable with standard O antisera, and of these, serogroups O25 and O78 were the most frequently observed. Multilocus enzyme electrophoresis, based on 20 enzymes, resolved 17 electrophoretic types, forming seven clusters. Isolates from four of these clusters fell into E. coli clone complexes that have been previously reported to be commonly associated with avian colibacillosis. All isolates expressed two to five iron-regulated outer membrane proteins, were resistant to serum and cloacin DF13, and possessed DNA sequences homologous to fim and iuc/iut. Most isolates (72%) were positive for traT, and a majority produced colicin V and aerobactin (92 and 82%, respectively). Assays for the presence of fim and pap DNA sequences, for HA, and for virulence gave variable results but suggest that cellulitis isolates may express F1A and/or other mannose-resistant HA fimbriae different from P and may be virulent in 1-day-old chickens. Our results support the hypothesis that cellulitis in broilers in many cases is caused by E. coli clones identical to other pathogenic avian E. coli strains. Certain clones may be specific to cellulitis, because 25% of the isolates tested belong to clusters not related to known clone complexes.

Animals↗
PubMed1991

Zoonotic diseases of birds.

Numerous diseases are shared by birds and humans. Many of them are true zoonosis. Chlamydiosis, salmonellosis, and tuberculosis are the primary infectious diseases. Allergic alveolitis in humans, induced by exposure to bird dander and protein, is also of great significance. The other diseases are of less common occurrence or represent oddities. [Editor's note: However, the increased incidence of AIDS and the increased use of immune system-compromising medications in humans have resulted in a drastic increase in the zoonotic diseases. Formerly rare diseases are becoming more common.]

Alveolitis, Extrinsic Allergic↗
PubMed1978

[Two surveys on farmer's lung disease and bird breeder's disease in the Pyrenees region].

Two different surveys, one strictly epidemiological in rural areas, the other retrospective and within hospitals, led to a better knowledge of the setting of the FLD and BBD in South Pyrenees region. In the country, more than 12% of patients had specific precipitins, 6% had either one or both diseases; women had anti-aviary precipitins more frequently than men. The retrospective hospital survey yielded 456 cases of patients admitted or consulting revealing numerous correlations between the different clinical, radiological and functional syndromes on the one hand and the serological positivity on the other. Serological diagnosis was most useful, as a wide variety of antigenic extracts was used (actinomycetes thermophiles, mouldy hay, bird droppings), mixed sensitizing was extremely frequent. The widely found positivity towards avian antigens seems specific to the South Pyrenees region.

Adult↗
PubMed1982

Some aspects of John Hunter's work on the diseases of birds of prey.

The Hunterian Museum contains 14 specimens from birds of prey. Four of these are in the Pathological Series and comprise 3 healed fractures and 1 skeletal lesion of doubtful aetiology. Hunter made useful, if limited, contributions to this branch of avian pathology and his role is evaluated.

Animals↗