Sheep version of MCD- Scrapie or Johanne's Disease??

Discussion in 'Sheep' started by arley, Dec 29, 2003.

  1. arley

    arley Member

    Apr 26, 2003
    I have a small flock, and haven't worried too much about sheep disease. Then I began to hear about Johanne's disease and scrapie. I thought, I don't have so why worry? Now I worry, not because my flock is ill, but it seems to be a reality anywhere. I am rambling a bit, but my question is this: is Johanne's disease and scrapie the same, or are they two completely seperate aflictions? From what I have read thus far, they appear to have the same symptoms. Can someone please describe both diesase to me please? Thank you.
  2. Ross

    Ross Moderator Staff Member Supporter

    May 9, 2002
    Scrapie is the disease most like Mad Cow (BSE,MCD) and is a prion based infection. Johnes, is a bacterial infection of the gut by the same bacteria that causes TB in humans. In cattle the Johnes will cause obvious distress, watery foul diarrhoea, etc. in sheep it's not always obvious. This may be where you're getting confused as it can be a chronic wasting type disease. If your sheep are eating well and are not infected with worms, you could test for Johnes. Scrapie wasting is due to not eating. Scrapie infected sheep don't always show many symptoms, odd behavior or trouble controling how they walk (a peculiar hopping gate not related to feet problems) are common symptoms. If your sheep are healthy good producing animals I'd be surprised to hear they had either disease.

  3. kabri

    kabri Almst livin the good life

    May 14, 2002
    W. Washington State
    Regarding Johnnes', I would say that it IS obvious, same symptoms as cattle. They get the runs and they drop body weight very fast, even though they still eat. This is after worms and other intestinal problems have been ruled out. We had what seemed to be this disease affect a friend's small flock of barbado sheep that were being boarded at our place. Our wool sheep have never shown the slightest sign of illness and it's been over 3 years now. Johnnes' is very difficult to diagnose, the sick sheep came from a flock that was tested over and over again, and they got 1 positive result after many negative ones.
  4. bergere

    bergere Just living Life

    May 11, 2002
    Now in Virginia
    What is even more scary, as it can take up to 10 years for a sheep to show visiable signs of the disease.

    It is best to be in the Scrapie program.