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Microbiology
Bacteria - Gram neg., aerobic or fac. anaerobic
23
Veterinary Medicine
Undergraduate 2
10/28/2006

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Term
How is Sleepy Foal Disease controlled?
(Actinobacillus equuli)
Definition
Good sanitation and parturition.
Term
Actinobacillus equuli
Definition
"Sleepy Foal Disease"
Naturally present in tonsils & intestines; only causes disease when predisposed by stress; may cause septicemia or purulent infections of joints and kidneys.
Term
Actinobacillus lignieresii
Definition
Affects cattle and sheep. Enters oral cavity through wounds in buccal mucosa; causes wooden tongue in cattle.
Term
Actinobacillus spp.
Definition
Gram neg. rods; both pleomorphic & filamentous; fac. anaerobic; indole neg.; urease pos.
Term
***Taylorella (Haemophilus) equigenitalis
Definition
Contagious equine metritis; transmitted by stallion or fomites; profuse, grayish-white, mucopurulent vulvar discharge w/ endometritis, cervicitis, or vaginitis 2-12 days after breeding; decreased fertility in mares; stallions are asymptomatic carriers.
Term
Haemophilus gallinarum
Definition
Causes fowl coryza; respiratory transmission or through contaminated drinking water; nasal discharge, sneezing, facial swelling.
Term
Actinobacillus (Haemophilus) pleuropneumoniae
Definition
Swine; contagious pleuropneumonia; respiratory transmission; usually introduced or spread by imported affected animals.
Term
Haemophilus suis
Definition
SWINE; causes flu-like symptoms; swollen joints, lameness; fever; anorexia; depression.
Term
Haemophilus somnus
Definition
CATTLE; grows best in 5-10% CO2; causes TEME in cattle; sleepiness; fever of 107.6F; neurologic signs (stupor, ataxia, paralysis)
Term
Haemophilus spp.
Definition
Gram neg. rods or coccobacilli (small); non-motile; microaerophilic or fac. anaerobic. Predisposing factors: shipping stress, changes in climate, crowding.
Term
Contributing stress factors of shipping fever:
Definition
transportation; exhaustion; starvation; dehydration; chilling; overheating; exposure to exhaust fumes
Term
Causative factors of shipping fever:
Definition
Pasteurella hemolytica; Pasteurella multocida; viral infection; Parainfluenza 3; bovine respiratory synctial virus; mycoplasma.
Term
Pasteurella multocida
Definition
Gram neg. coccobacillus; non-hemolytic on BAP; rarely grows on MacConkey; catalase pos.; indole pos.; urease neg.; snuffles in rabbits; shipping fever in cattle.
Term
Prevention and control of Pasteurella hemolytica: (7 things)
Definition
minimizing stress; pre-conditioning programs; prophylactic drugs after shipping; early ID of sick animals w/ aggressive treatment to prevent losses; isolation of new herd members; good husbandry; ventilation; vaccination.
Term
Pasteurella hemolytica
Definition
Gram neg. coccobacillus; Biotype A colonies are gray w/ hemolysis on blood agar; Biotype B colonies have brownish centers and are hemolytic; MacConkey produces small pink colonies.
Term
Pasteurella spp.
Definition
Gram neg. coccobacilli or rod (small); aerobic or fac. anaerobic; catalase pos.; oxidase pos., indole neg.
Term
Proteus mirabilis
Definition
Gram neg. rod; motile; urease pos.; BAP: swarms, uniform film over entire agar. MacConkey: colorless. Distinct, putrid odor.
Term
Klebsiella pneumoniae
Definition
Gram neg. rod; non-spore forming, heavy capsule; non-motile. BAP: moist, spreading, glistening, viscid colonies, gray & nondescriptive; citrate pos., urease pos.
Term
Salmonellosis
Definition
Two forms:
Septic: young animals; generally no diarrhea; high fever, elevated RR; elevated HR; neuro signs.
Enteric: older animals; severe watery diarrhea; feces: putrid odor.
Term
Salmonella spp.
Definition
Gram neg. rod; motile; aerobic or fac. anaerobic; differential & selective media for ID; fecal/oral transmission of organism; MacConkey agar-colorless colonies; BAP-smooth, glossy surface with regular edge, or rough granular surface with irregular edge; Brilliant green agar-bright pink colonies; Bismuth sulfite-blue/green colonies w/ black centers.
Term
Control of E. coli (3 things)
Definition
ensure good colostrum intake; proper housing & good hygiene; vaccinating susceptible animals
Term
Escherichia coli
Definition
Gram neg. rod; non-spore forming; aerobic or fac. anaerobic; mostly motile; produces deep red colonies on MacConkey agar.
Term
Enterobacteriaceae
Definition
Gram neg. rods or coccobacilli (small); aerobic or fac. anaerobic; catalase pos.; oxidase neg.; variable motility; transmitted by naval infections, ingestion of contaminated feces; BAP-raised, smooth, glistening, gray, circular in outline.
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