Three cattle infected with the bluetongue virus will not be slaughtered because the risk of transmission is "negligible".
Tests revealed that three cattle imported from France to a farm near Ruthin, Denbighshire, were carrying the virus but it had reached the "tail-end of its infection".
An Assembly Government spokesman stated that Rural Affairs Minister Elin Jones will consider ordering the immediate slaughter of any animals that do pose a risk of transmission and that no compensation will be paid.