Difference between revisions of "Actinobacillus equuli"

From WikiVet English
Jump to navigation Jump to search
(Created page with '*Commensal of the equine intestinal and reproductive tract *Pathogenesis and clinical signs: **Foals infected ''in utero'' or or after birth via the umbilicus **Infection at birt…')
 
Line 24: Line 24:
 
**RTX group cytotoxin present
 
**RTX group cytotoxin present
 
[[Category:Actinobacillus_species]][[Category:Horse]]
 
[[Category:Actinobacillus_species]][[Category:Horse]]
 +
[[Category:Pig]][[Category:Cattle]]

Revision as of 11:22, 10 May 2010

  • Commensal of the equine intestinal and reproductive tract
  • Pathogenesis and clinical signs:
    • Foals infected in utero or or after birth via the umbilicus
    • Infection at birth causes severe enteritis and septicaemia within 24 hours, known as sleepy foal disease
    • Foals become pyrexic and recumbent
    • Death usually occurs within 1-2 days
    • In foals that survive neonatal infection the condition progresses to cause joint infections and purulent nephritis, enteritis or pneumonia
    • A. equuli in arthritis of horses
    • Abortion, septicaemia and peritonitis in horses
  • Diagnosis:
    • Specimens cultured on blood agar and MacConkey agar and incubated aerobically for 1-3 days
    • Sticky colonies with variable haemolysis on blood agar
    • Lactose-fermenting colonies on MacConkey agar
  • Treatment and control:
    • Antimicrobials ineffective unless early in course of disease
    • Blood trasfusion and administration of colostrum
    • Good hygiene
    • Consider prophylactic antibiotics for new-born foals
    • Bacteria susceptible to streptomycin, tetracyclines and ampicillin
  • In other animals:
    • Septicaemia in piglets
    • Arthritis and enteritis in pigs
    • Enteritis in calves
    • RTX group cytotoxin present