Difference between revisions of "Porcine Brucellosis"

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== Introduction ==
 
  
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Porcine brucellosis is caused by the organism [[Brucella suis|''Brucella. suis'']] and is prevalent in pigs in Europe, Australia and Asia. It is, however, absent from the UK and Ireland.
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**Caused by [[Brucella suis|''B. suis'']]
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**Prolonged bacteraemia
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Infection is via the faeco-oral route or the venereal route and transmission is due to introduction of live pigs with the disease or infected semen or ova. Lateral spread may also occur in younger pigs. Sows may remain carriers of the disease for many months and pass this on to up to 10% of their progeny.
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**Chronic inflammation in reproductive organs of boars and sows; also in joints and bones
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**Routes of infection: ingestion or venereal
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== Clinical Signs ==
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**Abortion, still birth, neonatal mortality, temporary sterility
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**Boars excreting bacteria in semen may have testicular abnormalities or be normal
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Depend on when the infection occurs. Sows infected at service (by infected semen) will abort in the first trimester, whereas sows infected during pregnancy will usually produce mummified, stillborn or weak pigs depending on which stage of pregnancy the infection occurred. Endometritis and vulval discharge are other signs that may be seen.
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**Lameness, incoordination and posterior paralysis in joint and bone involvement
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**Rose Bengal and indirect ELISA for diagnosis
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In males, testicular abnormalities may be seen if they are excreting the bacteria in semen, such as enlargement and abnormal shape. Orchitis and epididymitis will occur 7 weeks after infection and then testicular atrophy may be present within 3 months.
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**Test and slaughter where exotic[[Category:To_Do_-_Kate]]
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Joints and bones may be involved in both sexes which may cause lameness and swelling. This can be severe enough to warrant their destruction on humane grounds.
 
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== Diagnosis ==
 
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Isolation of the organism from lymph nodes and culturing is a common diagnostic tool. Large scale surveillance is best performed using the Rose Bengal test plate and indirect [[ELISA testing|ELISA]].
 
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A PCR has been used but some infected animals are antibody negative.
 
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== Control ==
 
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Testing then slaughter is required immediately where the disease is exotic.
 
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[[Category:Reproductive Diseases - Pig]][[Category:Musculoskeletal Diseases - Pig]]
 
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[[Category:Expert_Review - Farm Animal]]
 

Revision as of 10:01, 4 March 2011


 This article is still under construction.


    • Caused by B. suis
    • Prolonged bacteraemia
    • Chronic inflammation in reproductive organs of boars and sows; also in joints and bones
    • Routes of infection: ingestion or venereal
    • Abortion, still birth, neonatal mortality, temporary sterility
    • Boars excreting bacteria in semen may have testicular abnormalities or be normal
    • Lameness, incoordination and posterior paralysis in joint and bone involvement
    • Rose Bengal and indirect ELISA for diagnosis
    • Test and slaughter where exotic
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