Value of the clinical examination in diagnosing enzootic pneumonia in fattening pigs

  • Nathues H
  • Spergser J
  • Rosengarten R
 et al. 
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Abstract

The diagnosis of enzootic pneumonia at the herd level should be based on a combination of different methods. Currently, clinical examination is usually considered to be a low value method, particularly compared to the direct detection of Mycoplasma hyopneumoniae in lung lesions by PCR. The present study compared the value of accurate clinical examination (including the quantitation of coughing), PCR on bronchoalveolar lavage fluid, and serological testing of blood samples for the purpose of diagnosing enzootic pneumonia. The coughing index (average % of pigs coughing per minute of observation) was determined in fattening pigs from 59 herds, and ranged from 0% to 6.7% with a median of 2.4%. Five hundred and ninety bronchiolar lavage samples and 1179 serum samples were taken from pigs in those 59 herds and tested for M. hyopneumoniae specific DNA and antibodies, respectively. In herds where 50% of lavage fluids were PCR positive, the likelihood of a higher coughing index was increased by 76% (OR: 1.76; 95% CI: 1.14-2.72) compared to herds with

Author-supplied keywords

  • Coughing index
  • Mycoplasma hyopneumoniae
  • Pig
  • Respiratory pathogens

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Authors

  • Heiko NathuesVetsuisse Fakultat Universitat Bern

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  • Joachim Spergser

  • Renate Rosengarten

  • Lothar Kreienbrock

  • Elisabeth Grosse Beilage

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