J Vet Sci.  2005 Dec;6(4):289-293.

Prevalence of Lawsonia intracellularis, Brachyspira hyodysenteriae and Salmonella in swine herds

Affiliations
  • 1Research Institute of Health and Environment, Daegu 706-841, Korea.
  • 2College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, Korea. songjach@mail.knu.ac.kr

Abstract

The prevalence of Lawsonia intracellularis, Brachyspira hyodysenteriae and Salmonella spp. were investigated by multiplex PCR using fecal samples of pigs with diarrhea or a history of diarrhea. The overall herd prevalence of L. intracellularis, B. hyodysenteriae and Salmonella spp. were 46.5%, 37.2% and 51.1%, respectively. Also, the prevalence of L. intracellularis, B. hyodysenteriae and Salmonella spp. among all sampled pigs were 19.9%, 10.8% and 17.7%, respectively. Seventeen of 43 herds were positive with 2 enteric organisms, and 2 herds were positive with L. intracellularis, B. hyodysenteriae and Salmonella spp. simultaneously. It was notable that 11 of 12 herds with more than 2, 000 pigs were affected with Salmonella spp., and that only 2 of 12 the herds were affected with B. hyodysenteriae. This study suggested that herds positive for L. intracellularis, B. hyodysenteriae and Salmonella spp. were distributed throughout Korea, although the relationship among other pathogens such as viral or parasitic ones and/or with metabolic disorders was not determined.

Keyword

Brachyspira hyodysenteriae; Lawsonia intracellularis; prevalence; Salmonella; swine

MeSH Terms

Animals
DNA, Bacterial/isolation&purification
Desulfovibrionaceae Infections/epidemiology/microbiology/*veterinary
Diarrhea/microbiology/veterinary
Korea/epidemiology
*Lawsonia Bacteria/isolation&purification
Polymerase Chain Reaction/veterinary
Prevalence
*Salmonella/isolation&purification
Salmonella Infections, Animal/*epidemiology/microbiology
*Serpulina hyodysenteriae/isolation&purification
Spirochaetales Infections/epidemiology/microbiology/*veterinary
Swine
Swine Diseases/*epidemiology/microbiology
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