Concerned About Blackhead?

Orego-Stim may be the answer.

What is Blackhead?

Blackhead, also known as Histomoniasis, is caused by the protozoan parasite Histomonas meleagridis. This parasite invades the caecal mucosa and spreads, via the blood, to the birds’ liver and caecum where lesions occur. It is a serious disease for turkeys and can cause huge economic losses for producers as a result of poor performance and an incredibly high flock mortality.

What are the Symptoms of Blackhead?

Although both chickens and turkeys are susceptible to the disease, the symptoms appear most severe in turkeys. There are both physical symptoms and behavioural signs which are indicative of blackhead disease, including; lethargy, reduced appetite, anorexia and drooping wings. However, the most definitive symptom of blackhead disease is the production of yellow-coloured excreta.

What Treatment is Available for Blackhead?

There are currently no licenced medications for treatment of blackhead in the UK. Historically, dimetronidazole, an antimicrobial with anti-protozoal properties was used, however this has now been banned for use in the EU. Therefore finding a safe, natural alternative for turkey producers is massively important.

How Can Oregano Essential Oil Help?

Disruption to the life-cycle of the blackhead parasite is the best way to reduce the impact of the disease. Controlling the replication of oocysts and reducing the population in the environment helps to reduce the challenge on the bird whilst enabling natural immunity to develop. In addition, increasing gut cell turnover supports healing and repair of the gut lining to maintain optimal gut health.

Natural oregano essential oil (OEO) has many properties, including antimicrobial, antioxidant and immunomodulatory functions. It also possesses anti-protozoal properties as the active ingredients in OEO results in the rapid replacement of epithelial cells lining the intestinal wall.

Introducing Orego-Stim…

Orego-Stim, is a consistently high quality source of 100% natural OEO.

In poultry species it has been shown to:

  • Support intestinal health
  • Maintain growth performance
  • Help optimise feed efficiency
  • Maintain a healthy immune system
  • Help maintain performance during blackhead and coccidial challenge and can support the action of coccidiosis control programmes
  • Offer a profitable return on investment


Orego-Stim is available as both a powder and liquid for addition in feed or drinking water