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Marek’s disease

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Claytonm348

Marek's disease is a viral disease that commonly affects young chickens between 12-25 weeks old. It is caused by a herpes virus that is shed in dander from infected birds. Common signs of Marek's disease include breathing difficulties, lameness, paralysis, and tumors in the lymph nodes, muscles, and internal organs. While there is no treatment, vaccination within 3 days of birth can prevent tumors caused by the virus. Proper sanitation and isolation of infected birds is important to control spread of the disease.

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Marek’s DiseaseBy: Clayton Merritt
Marek’s Disease Marek’s disease is characteristically a disease of young chickens, but older birds can also be affected. It’s name after JozsedMarek.Frequently there at tumors in the lymph nodes, skeletal muscle, visceral organs.
Marek’s DiseaseCommonly affected organsOvarySpleenLiverKidneysLungsHeartTumors can cause organ failure and kill the bird.
Affected Birds 12-25 WeeksMainly found in chickens, but occasionally affect pheasants, quail, game fowl, and turkeys.
Causes Marek’s disease is caused by a virus belonging to the herpes virus group. It appears that the virus is concentrated in the feather follicles and shed in the dander. The virus can survival months in dander from birds.
SignsLabor BreathingLamenessParalysisIncoordinationBlindnessPalenessPale Scaly CombsGreenish Diarrhea
DiagnosisThe demonstration of nerve enlargement.But the only way to be for sure it to test the manure.
Nerve EnlargementNerve Enlargment
Nerve Enlargement The sciatic nerve of a bird infected with Marek's disease has been removed and shown on top with a normal nerve on the bottom for comparison.
Treatment/PreventionNo treatment has been found yet.Marek’s can be vaccinated for within 3 days of birth.Vaccination prevent tumors, but doesn’t prevent the virus.Also keep facilities clean and don’t bring in foreign birds, and don’t visit other chicken farms.
ControlMarek’s Disease is highly contagious. If you have suspicion that a bird has it isolate it quick. If the birds get it, and don’t die, they will be carriers for life and will infect any new birds that are introduced.
The End!Hope YouLearnSomething!!!!!

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Marek’s disease