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Johne's Disease (view source)

Revision as of 13:31, 20 July 2010

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===Clinical===

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The infection primarily affects the intestine, and causes thickening of the mucosal wall. This causes impaired function, affecting its absorptive ability. This may cause, severe emaciation, and chronic profuse diarrhoea.

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* Clinical signs develop in older cows ~~after~~ calving ~~i.e. 3 to 4 years of age~~.

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Clinical signs may also develop in older cows during times of stress; around calving for example.

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* '''BUT''' animals are infected ~~as calves less than 6 months old~~

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** The disease develops very slowly.

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In advances cases the infected animal gradually fades away and dies over the course of months.

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* Clinical signs include:

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** Ongoing, chronic profuse diarrhoea.

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*** Paint like consistency.

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** Hindquarters and tail-caked with faeces

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** Faeces also splattered on walls.

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** Animal gradually fades away and dies over the course of months.

===Pathogenesis===

Cmcory

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