Skip to main content
PMC home page
Acta Veterinaria Scandinavica logoLink to Acta Veterinaria Scandinavica
. 1980 Mar 1;21(1):34–42. doi: 10.1186/BF03546898

Mycoplasma Dispar As a Causative Agent in Pneumonia of Calves

Mycoplasma dispar som årsag til pneumoni hos kalve.

N F Friis 1,✉
PMCID: PMC8317724  PMID: 7386329

Abstract

Three field strains of Mycoplasma dispar were inoculated, by aerosol inhalation, into a total of eight naturally-born, colostrum-deprived calves. All three strains produced macroscopic pneumonia, each in one calf. Histopaithologically an exudative bronchitis accompanied by moderate interstitial cell proliferations was found.

Reisolation studies indicated that the entire respiratory tract is the natural habitat of Mycoplasma dispar, which apparently does not spread via the blood stream.

Keywords: bovine pneumonia, Mycoplasma dispar

Full Text

The Full Text of this article is available as a PDF (1.1 MB).

References

  1. Bitsch V., Friis N. F., Krogh H. V. A microbiological study of pneumonie calf lungs. Acta vet. scand. 1976;17:32–42. doi: 10.1186/BF03547941. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Friis N. F. Mycoplasma suipneumoniae and Mycoplasma flocculare in comparative pathogenicity studies. Acta vet. scand. 1974;15:507–518. doi: 10.1186/BF03547222. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Friis N. F. Heterogeneity of Mycoplasma dispar. Acta vet. scand. 1978;19:407–412. doi: 10.1186/BF03547609. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Friis N. F., Pedersen K. B. Isolation of Mycoplasma bovoculi from cases of infectious bovine keratoconjunctivitis. Acta vet. scand. 1979;20:51–59. doi: 10.1186/BF03546591. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Gourlay R. N., Leach R. H. A new mycoplasma species isolated from pneumonic lungs of calves (Mycoplasma dispar sp. nov.). J. med. Microbiol. 1970;3:111–123. doi: 10.1099/00222615-3-1-111. [DOI] [PubMed] [Google Scholar]
  6. Gourlay R. N., Mackenzie A., Cooper J. E. Studies of the microbiology and pathology of pneumonic lungs of calves. J. comp. Path. 1970;80:575–584. doi: 10.1016/0021-9975(70)90055-1. [DOI] [PubMed] [Google Scholar]
  7. Howard C. J., Gourlay R. N., Thomas L. H., Stott E. J. Induction of pneumonia in gnotobiotic calves following inoculation of Mycoplasma dispar and Ureaplasmas (T-mycoplasmas) Res. vet. Sci. 1976;21:227–231. doi: 10.1016/S0034-5288(18)33377-0. [DOI] [PubMed] [Google Scholar]
  8. Kuniyasu C., Yoshida Y., Ueda H., Sugawara H., Ito Y. Isolation of Mycoplasma dispar from pneumonic calf lungs in Japan. Nat. Inst. Anim. Hlth Quart. 1977;11:75–76. [PubMed] [Google Scholar]
  9. Mandrup M., Friis N. F., Meyling A., Meding J. H. Studies on the possible occurrence of mycoplasmas in boar semen. Nord. Vet.-Med. 1975;27:557–561. [PubMed] [Google Scholar]
  10. Ose E. E., Muenster O. A. Isolation of Mycoplasma dispar from cattle in the United States. Vet. Rec. 1975;97:97. doi: 10.1136/vr.97.5.97. [DOI] [PubMed] [Google Scholar]
  11. Rosendal S., Black F. T. Direct and indirect immunofluorescence of unfixed and fixed mycoplasma colonies. Acta path, micro-biol. scand. Section B. 1972;80:615–622. doi: 10.1111/j.1699-0463.1972.tb00186.x. [DOI] [PubMed] [Google Scholar]
  12. St George T. D., Horsfall Nicola, Sullivan N. D. A subclinical pneumonia of calves associated with Mycoplasma dispar. Aust. vet. J. 1973;49:580–586. doi: 10.1111/j.1751-0813.1973.tb06738.x. [DOI] [PubMed] [Google Scholar]
  13. Thomas L. H., Smith G. S. Distribution of mycoplasmas in the non-pneumonic bovine respiratory tract. J. comp. Path. 1972;82:1–4. doi: 10.1016/0021-9975(72)90019-9. [DOI] [PubMed] [Google Scholar]

Articles from Acta Veterinaria Scandinavica are provided here courtesy of BMC

RESOURCES