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Brucella suis
| Species |
Incubation period |
Clinical signs |
| Pigs |
Abortions have been seen as early as 17 days. |
Clinical signs may be transient. Abortions (at any time in gestation) and infertility in sows, sterility in gilts and boars, heavy piglet mortality, orchitis (usually unilateral) and reduced fertility in boars, lameness and incoordination which may be associated with arthritis and osteomyelitis, posterior paralysis, weak offspring. Temporary or permanent orchitis can be seen in boars (sterility may be the only sign of infection in boars). Swollen joints and tendon sheaths or lameness can occur in both sexes. Posterior paralysis, metritis, and abscesses in other parts of the body are less commonly seen. Weanlings may show signs of spondylitis and posterior paralysis. |
| Cattle |
-- |
Abortion, metritis, mastitis, orchitis, epididymitis, lameness, arthritis, hygromas, and subcutaneous abscess formation. |
| Caribou, reindeer |
-- |
-- |
| Horses |
-- |
Mostly asymptomatic. Occasional abortions (rare), fistulous withers, poll evil. In chronic cases, nearby ligaments and the dorsal vertebral spines may become necrotic. |
| Dogs, cats |
-- |
Usually subclinical although can be severe. Fever, emaciation, abortions, arthritis, orchitis, anestrus. |
References:
- Acha P, Szyfres B. Zoonoses. Bacterioses listed B (Botulism, Brucellosis). Zoonoses and Communicable Diseases Common to Man and Animals. Pan American Health Organization, 41-67,2003.
- Center for Food Security and Public Health, Iowa State University College of Veterinary Medicine. Brucellosis fact sheet.
( http://www.cfsph.iastate.edu/Factsheets/pdfs/brucellosis.pdf )
- Coetzer J, Tustin R. Infectious Diseases of Livestock, 2nd ed. Volume Three. Oxford University Press: New York, 2004.
- Cvetnic Z et al. Isolation of Brucella suis biovar 3 from horses in Croatia. Veterinary Record: Journal of the British Veterinary Association, 156:584-585, 2005.
- Food and Agriculture Organization (FAO). Manual on Meat Inspection.
( http://www.fao.org/docrep/003/t0756e/T0756E05.htm )
- Forbes L, Tessaro S. Evaluation of cattle for experimental infection with and transmission of Brucella suis biovar 4. Journal of the American Veterinary Medical Association, 222:1252-1256, 2003.
- Fox J, Anderson L, Loew F et al. Laboratory Animal Medicine, 2nd ed. Academic Press: San Diego, 2002.
- Leman A et al. Diseases of Swine, 6th ed. Iowa State University Press: Ames, Iowa, 1986.
- Merck Veterinary Manual, 8th ed (online).
( http://www.merckvetmanual.com/mvm/index.jsp?cfile=htm/bc/110504.htm )
( http://www.merckvetmanual.com/mvm/index.jsp?cfile=htm/bc/110505.htm )
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[ This page was last updated on Thursday, December 22, 2005. ]
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