Reference Tables

Bacterial Organisms by Site: Ruminants [Farm Animal]

(* = most common differential diagnoses)

Site Bacterial Organisms
Bacteremia
  • Escherichia coli*
  • Histophilus somni
  • Pasteurella spp.
  • Listeria monocytogenes
  • Salmonella enterica
  • Bacillus anthracis (uncommon; regulatory disease)
Eye
  • Moraxella bovis*
  • Moraxella bovoculi
  • Branhamella ovis
Draining Tracts/Wounds
  • Trueperella pyogenes*
  • Corynebacterium pseudotuberculosis*
  • Actinomyces spp.
  • Clostridium histolyticum
  • Enterics
Gastrointestinal
  • Salmonella enterica*
  • Escherichia coli (enterotoxigenic in calves)
  • Clostridium perfringens
  • Mycobacterium avium subsp. paratuberculosis
Mastitis
  • Streptococcus spp. (agalactiae, dysgalactiae, uberis)
  • Staphylococcus aureus
  • Coliforms
  • Coagulase-negative Staphylococcus spp.
  • Pseudomonas spp.
  • Proteus spp.
  • Trueperella pyogenes
  • Pasteurella spp. (uncommon)
  • Mycoplasma spp.
  • Klebsiella spp.
Reproductive Tract
  • Trueperella pyogenes*
  • Escherichia coli*
  • Anaerobes*
  • Leptospira spp.
  • Mycoplasma bovigenitalium
  • Campylobacter fetus, other Campylobacter spp.
  • Brucella abortus (uncommon; regulatory disease)
Respiratory Tract
  • Pasteurella multocida*
  • Mannheimia hemolytica*
  • Histophilus somni*
  • Mycoplasma spp.
  • Trueperella pyogenes
  • Salmonella enterica serotype Dublin
  • Fusobacterium necrophorum (upper respiratory tract)
Traumatic Reticuloperitonitis
  • Trueperella pyogenes
  • Actinomyces spp.
  • Anaerobes
Urinary Tract
  • Corynebacterium renale*
  • Trueperella pyogenes*
  • Escherichia coli*
  • Leptospira spp.

 

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