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The Occurrence of Mycoplasmas and Bacteria in Lungs from Sheep in Southern Norway
Forekomst au mycoplasmer og bakterier i lunger fra sau i Sør-Norge
Acta Veterinaria Scandinavica volume 23, pages 235–247 (1982)
Abstract
In order to study the occurrence of mycoplasmas among Norwegian sheep, lungs from a great number of different herds were collected at 3 abattoirs in Southern Norway. The presence of fermenting mycoplasmas and bacteria was examined in both normal and pneumonic lungs to determine whether recovery of these agents could be related to pneumonic changes. Pneumonic lungs demonstrated lesions typical of the condition described as subacute or chronic pneumonia.
Mycoplasma ovipneumoniae was found in 87 % of the 126 pneumonic lungs and in 6 % of the 83 normal lungs. Bacteria, mostly Pasteurella haemolytica, were less frequently encountered in the pneumonic lungs, and usually in combination with M. ovipneumoniae. It is concluded that M. ovipneumoniae is widespread among sheep in Southern Norway and can be considered to have etiological significance in subacute or chronic pneumonia, whereas bacteria probably occur mainly as secondary invaders. Changes resulting from moderate invasion by lungworm were found in about half of the lungs, but just as frequently in normal as in pneumonic lungs, and accordingly did not appear to contribute to the pneumonia investigated.
Sammendrag
Et utvalg av pneumoniske og normale lunger fra sau, vesentlig lam, fra et stprre antall besetninger i Sør-Norge, er undersøkt m. h. p. glukoseforgjaerende mykoplasmer og bakterier. Mycoplasma ovipneumoniae ble påvist i 87 % av 126 pneumoniske og 6 % av 83 normale lunger. Bakterier, vesentlig Pasteurella haemolytica, ble påvist mind-re hyppig i pneumoniske lunger og som regel sammen med M. ovipneumoniae. Det er konkludert med at M. ovipneumoniae er vidt utbredt i den norske sauepopulasjonen, og antas å vaere av etiologisk betydning ved subakutt eller kronisk pneumoni hos lam, mens bakterier antas vesentlig å opptre som sekundaerinfeksjon. Slike bakterielle sekundserinfeksjoner synes å Øke utbredelsen av de pneumoniske lesjoner. Forandringer etter moderåt invasjon av lungeorm ble påvist i ca. halvparten av lungene, men like hyppig i normale som i pneumoniske lunger, og synes således ikke å disponere for den omtalte pneumoni-type.
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Bakke, T. The Occurrence of Mycoplasmas and Bacteria in Lungs from Sheep in Southern Norway. Acta Vet Scand 23, 235–247 (1982). https://doi.org/10.1186/BF03546809
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DOI: https://doi.org/10.1186/BF03546809