Serological investigation on the decline of maternally derived antibodies against Haemorrhagic Enteritis (HE) in current turkey genetics under field conditions

Kristian Düngelhoef, Heike Hufen, Christian Mandischer, and Peter Bahrenberg


Serological analyses frequently reveal a previous infection with the HE-virus when multifactorial diseases occur in middle-aged fattening turkeys. The main clinical sign of this more subclinical form of an HE-virus disease is immunosuppression, whereas the classical form involving turkeys dying of blood loss is nowadays rarely observed. Therefore, the application of a live HE-virus  vaccine (Dindorai®SPF, Merial GmbH) is crucial on most turkey farms and is an important tool to minimize the use of antibiotics...