Johne’s Disease in Sheep

Johne's disease or paratuberculosis is greatly under-diagnosed in many UK sheep flocks. 

The disease is characterised by emaciation but not, as in cattle, chronic severe diarrhoea. Disease is encountered in all sheep husbandry systems, including extensively managed flocks. 

In many infected flocks, the annual ewe mortality rate from Johne’s disease is as high as 10%.