MAREK’S DISEASE (MD)

MD is a highly contagious virus found in poultry facilities across the world. Impossible to
eliminate from the production environment, this infectious disease causes tumors, high
mortality and increased bird condemnations at processing plants.

UNDERSTANDING THE THREAT FROM MD

Marek’s Disease virus is found in poultry dust and dander in most poultry facilities. Impossible to eliminate, even with careful cleanout and disinfection procedures, this airborne virus attacks the nerves, producing paralysis, tumors or enlarged feather follicles in affected birds. It results in broiler rejects at processing and can cause mortality and egg production losses. Infected birds carry the highly contagious virus in their blood for life and are a source of infection to susceptible birds.

PROTECTING AGAINST MD

There is no treatment for Marek’s Disease (MD), prevention is the only
effective strategy. Traditional vaccines using live viruses require more
than one administration to ensure long-term protection. Hatchery
vaccination, either in ovo1 or in day-old chicks, has proven to be an
extremely effective prevention strategy against MD, and consists of a
single dose with no follow up. This approach also uses the herpesvirus
of turkey (HVT) which is safe to chickens.
1please check local registration for indicated method of administration

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