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Brucella melitensis (view source)

Revision as of 12:33, 17 August 2012

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*Caprine and ovine brucellosis:
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{{OpenPagesTop}}
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**Caused by ''B. melitensis''
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{{Taxobox
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**Goats more susceptible
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|name              =''Brucella melitensis''
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**Abortion, orchitis in males, arthritis, hygromas
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|phylum            =Proteobacteria
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**May not have protective immunity following abortion
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|class              =Alpha Proteobacteria
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**Rose Bengal agglutination test and complement fixation test
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|order              =Rhizobiales
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**Test and slaughter where exotic
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|family            =Brucellaceae
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*Ovine epididymitis
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|genus              =[[Brucella species|Brucella]]
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**Caused by ''B. ovis''
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|species            =''B.melitensis''
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**Epididymitis in rams and placentitis in ewes
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}}
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**Reduced fertility in rams, sporadic abortion and peinatal mortality
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==Introduction==
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**Venereal transmission
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[[File:Brucella mel.jpg|right|thumb|250px|<small><center> A photomicrograph of the bacterium ''Brucella melitensis''. (CDC 1979, Wikimedia commons)</center></small>]]
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**Long latent period in rams following infection (present in semen 5 weeks after infection)
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''Brucella melitensis'' is one of the '''[[Bacteria |bacterial organism]]''' responsible for [[Ovine Brucellosis | '''Ovine Epididymitis''']], along with ''[[Brucella ovis]]''.
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**Premating checks on rams - serological tests and scrotal palpation
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**Testicular atrophy and swollen epididymis in chronically-infected rams
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**Agar gel immunodiffusion test, complement fixation test and indirect ELISA
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**Vaccination of young rams with ''B. melitensis'' vaccine or ''B. ovis'' bacterin
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[[Category:Brucella_species]][[Category:Goat]][[Category:Sheep]]
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''Brucella melitensis'' however can also infect cattle, unlike ''[[Brucella ovis]]''.
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It is one of the [[Brucella species |Brucella genus]] of bacteria. There are three known biovars.
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It is a '''gram negative coccobacillus''' that sometimes forms small groups in tissues.
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==Lifecycle==
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''Brucella melitensis'' can be transmitted by the '''[[Stomoxys calcitrans | stable fly]]'''.
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==Pathogenesis==
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Severe '''inflammation''' of the epididymis particularly the tail cause formation of '''spermatocoeles''' and fibrinous '''adhesions'''.
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==Diseases==
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''B. melitensis'' causes [[Ovine Brucellosis]] (Epididymitis). It can also cause epididymitis in cattle.
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The disease is '''notifiable''' to the World Organisation for Animal Health [http://www.oie.int/ (OIE)].
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{{Learning
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|literature search = [http://www.cabdirect.org/search.html?rowId=1&options1=AND&q1=%22Brucella+melitensis%22&occuring1=title&rowId=2&options2=AND&q2=&occuring2=freetext&rowId=3&options3=AND&q3=&occuring3=freetext&x=48&y=11&publishedstart=yyyy&publishedend=yyyy&calendarInput=yyyy-mm-dd&la=any&it=any&show=all ''Brucella melitensis'' publications]
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|flashcards = [[Brucella melitensis Flashcards|''Brucella melitensis'' Flashcards]]
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}}
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==References==
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<references/>
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Merck Veterinary Manual, '''Brucellosis in sheep''', accessed online 06/06/2011 @ http://www.merckvetmanual.com/mvm/index.jsp?cfile=htm/bc/110506.htm&word=brucella%2covis
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{{CABI source
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|datasheet = [http://www.cabi.org/ahpc/?compid=3&dsid=90733&loadmodule=datasheet&page=2144&site=160 '' Brucella melitensis'']
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|date =2 June 2011
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}}
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<br><br><br>
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{{review}}
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{{OpenPages}}
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[[Category:Brucella_species]]
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[[Category:Sheep Bacteria]][[Category:Cattle Bacteria]]
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[[Category:CABI Expert Review]][[Category:CABI AHPC Pages]]
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