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Department of Agriculture, Environment and Rural Affairs Department of Agriculture, Environment and Rural Affairs An Roinn Talmhaíochta, Comhshaoil agus Gnóthaí Tuaithe Depairtment o' Fairmin, Environment an' Kintra Matthers

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  • Johne's disease

    Topics:
    • Animal Health, Welfare and Trade, 
    • Diseases that affect cattle

    Johne‘s disease is an infectious wasting condition of cattle and other ruminants caused by Mycobacterium avium subspecies paratuberculosis (commonly known as Map).

    If notifiable disease is suspected, contact the DAERA Helpline on 0300 200 7840 or your local DAERA Direct Regional Office. Failure to do so is an offence

    Symptoms of Johne's disease

    It is closely related to the organism that causes tuberculosis. The disease progressively damages the intestines of affected animals, and in cattle this results in profuse and persistent diarrhoea, severe weight loss, loss of condition and infertility. Affected animals eventually and inevitably die.

    In dairy herds, the presence of Johne’s disease will significantly reduce milk yields well before other signs of the disease can be found.

    Although not a notifiable disease in Great Britain, Johne’s disease is notifiable in Northern Ireland.

    More useful links

    • Guidance on control of Johne's disease in dairy herds

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    • EU Exceptional Adjustment Aid
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