TITLE:
Presence of Actinobacillus pleuropneumoniae, Streptococcus suis, Pasteurella multocida, Bordetella bronchiseptica, Haemophilus parasuis and Mycoplasma hyopneumoniae in upper respiratory tract of swine in farms from Aguascalientes, Mexico
AUTHORS:
Abraham Loera-Muro, Francisco J. Avelar-González, Víctor M. Loera-Muro, Mario Jacques, Alma L. Guerrero-Barrera
KEYWORDS:
Porcine Respiratory Disease Complex; Actinobacillus pleuropneumoniae; Streptococcus suis; Pasteurella multocida; Bordetella bronchiseptica; Haemophilus parasuis; Mycoplasma hyopneumoniae
JOURNAL NAME:
Open Journal of Animal Sciences,
Vol.3 No.2,
April
18,
2013
ABSTRACT:
Respiratory
diseases are one of the most important health problems in pig herds. The porcine respiratory disease complex (PRDC) is the term used to describe pneumonic
diseases caused by multiple infectious agents that provoke weight loss in
animals or death. In the PRDC multiple pathogens (bacteria and/or viruses) work
in combination to induce this respiratory disease. Within this complex, Actinobacillus pleuropneumoniae, Streptococcus suis, Pasteurella multocida, Bordetella
bronchiseptica, Haemophilus parasuis and Mycoplasma hyopneumoniae are the
main bacterial pathogens involved in great economic losses to the swine
industry. The aim of this work was to estimate the presence of A. pleuropneumoniae, S. suis, P. multocida, B. bronchiseptica, H. parasuis and M. hyopneumoniae in the upper respiratory tract of pigs in representative
swine farms inAguascalientes,Mexico, using
PCR technique. The study was performed in 14 swine farms. We obtained a total
of 212 nasal swabs. Near 20% of samples were positive for A. pleuropneumoniae (located in the 79% of farms); 17% were positive for S. suis (in 86% of
farms), of these, 3% were S. suis serovar 2; 30% were positive for H. parasuis (93% of farms); 23% of the samples to P. multocida (in 79% of farms); and 19%
to M. hyopneumoniae (in 64% of farms). B. bronchiseptica was not
detected in this study. The results obtained show that bacterial pathogens of
PRDC were present in the upper respiratory tract of pigs in all farms studied;
therefore, these pathogens are widely disseminated in pig farms of
Aguascalientes, Mexico.