Difference between revisions of "Calf Diarrhoea, Undifferentiated Neonatal"

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#REDIRECT [[Undifferentiated Neonatal Calf Diarrhoea]]
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* A syndrome with many causes.
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=====Clinical=====
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* Is seen mostly in calves between 1 and 28 days old.
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* Known as "white scour".
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* Has a high morbidity in calves that are doing well and feeding well.
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* Large amounts of milk coloured [[Diarrhoea|diarrhoea]].
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** Tends to cover all over tail and hindquarters.
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*** Often produces skin sores.
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* Condition is lost quite quickly, and a high mortality may be caused.
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=====Pathogenesis=====
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* Certain conditions predispose calves to undifferentiated neonatal calf [[Diarrhoea|diarrhoea]].
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** Stress
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** Insufficient colostrum
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** Cold milk
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** Mixing strange calves together after separating from mother.
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 +
 
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* A mixture of viruses and bacteria are involved, some more commonly than others.
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** Undifferentiated neonatal calf [[Diarrhoea|diarrhoea]] is, however, '''a primarily viral disease'''.
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** Some of the agents below are also found also in perfectly normal calves.
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*** Other viruses not listed are also probably involved.
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*** The exact cause is not always important, since are cases all treated in the same way.
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 +
 
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{| border="1" cellspacing="0" cellpadding="5" align="center"
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! Virus
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! % Cases
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! Bacterium
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! % Cases
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|-
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| [[Reoviridae#Rotaviruses|Rotavirus]]
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| 40%
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| [[Cryptosporidium|Cryptosporidium]]
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| 20%
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|-
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| [[Coronaviridae|Coronavirus]]
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| 20%
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| [[Escherichia coli|Enterotoxigenic E.Coli]]
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| 20%
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|-
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| [[Herpesviridae|Infectious bovine rhinotracheitis virus]]
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| 4%
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| [[Campylobacter species|Campylobacter]]
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| 30-40%
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|-
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| [[Caliciviridae|Calici-]], [[Parvoviridae|parvo-]], [[Adenoviridae|adeno-]], viruses
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| 1% each
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| 
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| 
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|-
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|}
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* The condition has a very characteristis appearance on post mortem examination.
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** The intestine is filled with gas and foam, and possibly flakes of milk.[[Category:Enteritis,_Catarrhal]][[Category:Enteritis, Viral]][[Category:Cattle]]

Revision as of 19:21, 6 June 2010

  • A syndrome with many causes.
Clinical
  • Is seen mostly in calves between 1 and 28 days old.
  • Known as "white scour".
  • Has a high morbidity in calves that are doing well and feeding well.
  • Large amounts of milk coloured diarrhoea.
    • Tends to cover all over tail and hindquarters.
      • Often produces skin sores.
  • Condition is lost quite quickly, and a high mortality may be caused.
Pathogenesis
  • Certain conditions predispose calves to undifferentiated neonatal calf diarrhoea.
    • Stress
    • Insufficient colostrum
    • Cold milk
    • Mixing strange calves together after separating from mother.


  • A mixture of viruses and bacteria are involved, some more commonly than others.
    • Undifferentiated neonatal calf diarrhoea is, however, a primarily viral disease.
    • Some of the agents below are also found also in perfectly normal calves.
      • Other viruses not listed are also probably involved.
      • The exact cause is not always important, since are cases all treated in the same way.


Virus % Cases Bacterium % Cases
Rotavirus 40% Cryptosporidium 20%
Coronavirus 20% Enterotoxigenic E.Coli 20%
Infectious bovine rhinotracheitis virus 4% Campylobacter 30-40%
Calici-, parvo-, adeno-, viruses 1% each


  • The condition has a very characteristis appearance on post mortem examination.
    • The intestine is filled with gas and foam, and possibly flakes of milk.
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