524 bytes added ,  12:40, 1 March 2011
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*Sudden outbreak  
 
*Sudden outbreak  
 
*Affects birds of all ages  
 
*Affects birds of all ages  
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*Predominant losses in males
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*Sudden loss in hens that have history of Artificial Insemination (A.I.) 4- 5 days previously
 
*Sudden death without clinical signs in many birds  
 
*Sudden death without clinical signs in many birds  
 
*Prior to death some birds may have an unsteady gait and appear weak
 
*Prior to death some birds may have an unsteady gait and appear weak
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*Dark, purplish, swollen snoods are seen on affected males
 
*Dark, purplish, swollen snoods are seen on affected males
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<br>
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== Pathology  ==
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== Pathology ==
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'''Gross'''
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'''Gross'''
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*Enlarged friable liver, [[Spleen - Anatomy & Physiology|spleen]]&nbsp;and kidney&nbsp;  
 
  −
*Enlarged friable liver, [[Spleen - Anatomy & Physiology|spleen]]&nbsp;and kidney&nbsp;
   
*Lesions concurrent with septicaemia and congestion  
 
*Lesions concurrent with septicaemia and congestion  
*Petechial haemorrhage in abdominal fat
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*Petechial haemorrhage in abdominal fat  
*Haemorrhage in heart muscle
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*Haemorrhage in heart muscle  
 
*Arthritis and vegetative endocarditis and emaciation with chronic infections
 
*Arthritis and vegetative endocarditis and emaciation with chronic infections
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<br>
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'''Microscopic'''
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*Sinusoidal channels and blood vessel engorgement in most organs
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*Aggregations of fibrin and bacteria in capillaries and venules
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*Oedma and haemorrhage in lung and heart
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*Necrosis of parenchymal cells in the liver, spleen and kidney
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== Diagnosis ==
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*Presumptive diagnosis based on history, clinical signs and post mortem
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*Rapid presumptive diagnosis by gram-stained smears of liver, spleen and kidney and bone marrow will enable immediate treatment
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*Culture of the organism from dead birds is&nbsp;effective, but will not produce quick&nbsp;enough results for treatment of the flock
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'''Microscopic'''
     −
*Sinusoidal channels and blood vessel engorgement in most organs
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*Aggregations of fibrin and bacteria in capillaries and venules
  −
*Oedma and haemorrhage in lung and heart
  −
*Necrosis of parenchymal cells in the liver
     −
<br><br><br><br><br><br><br><br><br><br><br><br><br>&nbsp;  
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== <br><br><br><br><br><br><br><br><br><br><br><br><br><br>&nbsp; ==
    
[[Category:Alimentary_Diseases_-_Birds]] [[Category:Musculoskeletal_Diseases_-_Birds]] [[Category:To_Do_-_Kate]] [[Category:Cardiovascular_Diseases_-_Birds]]
 
[[Category:Alimentary_Diseases_-_Birds]] [[Category:Musculoskeletal_Diseases_-_Birds]] [[Category:To_Do_-_Kate]] [[Category:Cardiovascular_Diseases_-_Birds]]
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