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Bèta-hemolytic streptococci from pigs: bacteriological diagnosis
J Hommez1, L A Devriese, F Castryck
1Regional Veterinary Investigation Centre, Torhout, Belgium.
Summary
This study identified beta-hemolytic streptococci in pig lesions, including Streptococcus dysgalactiae and Streptococcus suis. The findings aid in interpreting commercial identification systems for these important swine pathogens.
Area of Science:
- Veterinary Microbiology
- Bacteriology
Background:
- Beta-hemolytic streptococci are significant pathogens in swine.
- Accurate identification of these bacteria is crucial for disease control and treatment.
Purpose of the Study:
- To identify beta-hemolytic streptococci isolated from pig lesions.
- To provide data for improving the interpretation of commercial bacterial identification systems.
- To propose and discuss identification procedures using coagglutination tests.
Main Methods:
- Isolation and identification of beta-hemolytic streptococci from pig lesions.
- Physiological characterization of bacterial isolates.
- Coagglutination testing for serovar identification.
Main Results:
- Identified Streptococcus dysgalactiae (biotype "equisimilis" and serovar L), Streptococcus porcinus, Streptococcus agalactiae, Enterococcus faecalis, and CO2-dependent/broad beta-hemolytic Streptococcus suis.
- Provided data for interpreting commercial identification systems.
Conclusions:
- The identified streptococcal species are relevant to swine health.
- The proposed identification methods and data can enhance diagnostic accuracy for beta-hemolytic streptococci in pigs.