Table 4: Summary of preventive measures for the development of atypical myopathy.

 All over Europe, but especially in Belgium, France, and Germany
 (i) High-risk seasons (mainly autumn and spring)
 (ii) Spring after an autumnal outbreak
 (iii) During outbreaks
During which weather conditions?
 (i) Lack of solar radiation
 (ii) Strong wind
 (iii) Rain and thunderstorms
 (iv) Cool temperature without heavy frost
For how long?
 Until 4-5 days of daytime frost or snow
For all grazing equids, but horses particularly at risk are
 (i) Young horses
 (ii) Horses with normal body condition
 (iii) Untrained horses
Horse management
 (i) Regular deworming and vaccination
 (ii) Provide supplementary feeding
 (iii) Do not feed hay from the ground
 (iv) Provide water from the distribution network and in a tank or a bath
 (v) Regular exercise
 (vi) Stable horses or limit pasturing during the risky seasons (<6 H a day or weather-dependant pasturing)
 (vii) Provide a salt block
Pasture management
 (i) Avoid spreading of manure on the pasture; prefer manual removal of faeces
 (ii) Avoid pastures where previous deaths have occurred
 (iii) Dead leaves and wood should be removed from the pasture and be burned
 (iv) Ensure rotation of pastures and avoid (during the risky seasons) (1) sloping pastures, especially those with a steep slope,
  (2) bare pastures, (3) humid pastures or pastures surrounded by or containing a stream or river, and (4) pastures surrounded by or containing trees
 (v) Provide general aspecific pasture treatment such as ploughing, sowing, mowing, and fertilizing