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BACTERIOLOGY
GRAM NEGATIVE
FAMILIES
Acetobacteriaceae
Alcaligenaceae
Bacteroidaceae
Chromatiaceae
Enterobacteriaceae
Legionellaceae
Neisseriaceae
Nitrobacteriaceae
Pseudomonadaceae
Rhizobiaceae
Rickettsiaceae
Spirochaetaceae
Vibrionaceae
 
Genera of Unestablished Relationships
Brucella
Chromobacterium
Selenomonas ruminantium
CLASSIFICATION VIRULENCE FACTORS ENVIRONMENTAL
BIOCHEMISTRY NORMAL FLORA INDUSTRIAL USES
GENETICS PATHOGENS VACCINES
SEROLOGY LABORATORY ID  

 

CLASSIFICATION

S. ruminantium is differentiated from the other species on the basis of fermentability of the various carbohydrates and other biochemical acitivities listed above. The tumbling motility is characteristic. The GC content of the DNA is 53-58 mol%.

BIOCHEMISTRY

S. ruminantium produces the acids acetic, propionic and to a lesser extent succinic from glucose, sucrose, cellobiose, mannitol and variably from lactose and trehalose. It hydrolyses aesculin and produces H2S. It may reduce nitrate and does not hydrolyse gelatin.

GENETICS

No information available.

SEROLOGY

No information available.

VIRULENCE FACTORS

No information available.

NORMAL FLORA

S. ruminantium is frequently isolated from rumen fluid of cows and sheep. They also form part of the normal flora of the alimentary tract of swine.

PATHOGENS

Intestinal Infections:

S. ruminantium is not generally associated with intestinal infections.

Extraintestinal Infections:

S. ruminantium is not generally associated with non-intestinal infections.

Animal Infections:

S. ruminantium is not generally associated with animal infections.

LABORATORY ID

Anaerobic culture methods have to strictly adhered to and complex media are required. Media such as blood agar or similarly rich media are required. As S. ruminantium is the only species to ferment cellobiose this can be used as a means of selecting these organisms.

ENVIROMENTAL

S. ruminantium has been isolated from bog-water and sewage sludges.

INDUSTRIAL USES

None.

VACCINES

None have been developed as none are needed due to the organisms not being pathogenic.


Bacteroidaceae

 

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