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==[[Enteritis, Parasitic]]==
 
==[[Enteritis, Parasitic]]==
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[[:Category:Enteritis, Viral]]
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==Mixed viral enteritis==
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* Mixed viral enteritis is particularly prevalent in very young calves.
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* It is predomintantly a management-related disease.
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* Viruses initiate the disease, but some bacteria are involved.
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===Cattle===
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====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 [[Intestine Diarrhoea - Pathology|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 [[Intestine Diarrhoea - Pathology|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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* A mixture of viruses and bacteria are involved, some more commonly than others.
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** Undifferentiated neonatal calf [[Intestine Diarrhoea - Pathology|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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{| 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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* 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.
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==== Winter Dysentery ====
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*Sporadic, acute, bloody [[Intestine Diarrhoea - Pathology|diarrhoea]] in adult cattle
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*Bovine [[Coronaviridae|coronavirus]] 
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*Worldwide distribution
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*Dramatic decrease in milk yields, less common in beef cattle
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===Pigs===
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* Pigs are particularly susceptible to a number of specific enteric viruses.
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** Especially coronaviruses.
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*** These may produces outbreaks on a whole farm basis in all ages of pigs.
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====[[Transmissible Gastroenteritis Virus of Pigs|Transmissible Gastro-Enteritis (TGE)]]====
       
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