Farmers’ economic interest in Dermanyssus gallinae control

Poultry red mite or Dermanyssus gallinae (De Geer, 1778) is the most significant poultry ectoparasite with regards to health and economy. It is a widely accepted opinion that D. gallinae can only be suppressed, with the current annual expenditure of 60 eurocents per layer. However, research indicates that D. gallinae can be controlled in other ways and eradicated from the production facilities and farms, and subsequent reinfestation can be prevented by implementing biosafety measures. This provides a long-term or permanent effect of D. gallinae control. From the aspect of economy, this means that after decades of increasing expenditures, farmers can first decrease, and then completely eliminate expenditures incurred by D. gallinae. Therefore, economic calculations should be based on an expert and comprehensive approach, which should itself be based on rational control, preventive veterinary medicine, i.e. D. gallinae control program. This would result in long-term savings. In 10 years? time, 0.5 million euros would be saved per 100.000 layers. There are an estimated 4 billion infested layers worldwide.