Exploratory study on the influence of climatological parameters on Mycoplasma hyopneumoniae infection dynamics

Joaquim Segalés, Oliver Valero, Anna Espinal, Sergio López-Soria, Miquel Nofrarías, Maria Calsamiglia, Marina Sibila

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12 Citations (Scopus)

Abstract

The objective of the present work was to elucidate the potential relationship between Mycoplasma hyopneumoniae infection and seroconversion dynamics and climatological conditions in four groups of pigs from the same farm born in different seasons of the year. Nasal swabs and blood samples were taken from 184 pigs at 1, 3, 6, 9, 12, 15, 18, 22 and 25 (slaughter age) weeks of age. Outside climatologic parameters, including temperature (°C), relative humidity (%), precipitation (l/m2) and wind speed (m/s) were recorded weekly from January 2003 to June 2004. Percentage of nPCR detection of M. hyopneumoniae in nasal swabs was associated significantly with the weekly precipitation rate [P = 0.0018, OR = 1.31 (IC = 1.11-1.55)]; the higher the precipitation rate, the higher the probability of being M. hyopneumoniae nPCR-positive. On the other hand, the percentage of seropositive pigs had a significant association with mean weekly temperature rate [P = 0.0012, OR = 0.89 [IC = 0.84-0.95]); the lower the temperature, the higher the probability of being M. hyopneumoniae seropositive. Animals born in autumn (when higher precipitations rates were recorded), entering finishing units in winter (when lower temperatures were recorded), and reaching slaughter in spring, had the highest probability of being infected by M. hyopneumoniae and the highest probability of being M. hyopneumoniae seropositive. © 2011 ISB.
Original languageEnglish
Pages (from-to)1167-1171
JournalInternational Journal of Biometeorology
Volume56
Issue number6
DOIs
Publication statusPublished - 1 Jan 2012

Keywords

  • Climatologic parameters
  • ELISA
  • Mycoplasma hyopneumoniae
  • nPCR

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