Bovis ISSN 2398-2993

Johne's disease (Farmer Factsheet)

Contributor(s): Dick Sibley , James Breen

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  • Johnes disease is an infectious disease of cattle caused by infection with a bacteria called Mycobacterium Avium subspecies Paratuberculosis (MAP).
  • Because of the long incubation period, most infected animals show clinical signs as adults, with weight loss and scour causing debility and eventually death.
  • The major economic losses are caused by the subclinical effects including poor production, infertility and premature culling.

Pathogen

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Pathogenesis

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Clinical effects

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Herd infection

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Prevalence

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Biosecurity

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Spread

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Testing and diagnosis

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Control

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Prevention

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