Poultry Judging Practice Test

Which vaccine is commonly used to prevent Marek's disease in poultry?

1. Infectious Bursal Disease Vaccine

2. Live Marek's Vaccine

3. Newcastle Disease Vaccine

4. Avian Influenza Vaccine

The correct answer is: Live Marek's Vaccine

The correct answer is the Live Marek's Vaccine, which is specifically developed to protect poultry from Marek's disease, a viral disease caused by the Marek's disease virus (MDV). This disease affects the immune system of birds and can lead to tumors, paralysis, and eventually death. The vaccine is typically administered to chicks at a very early age to ensure they develop immunity before exposure to the virus. Vaccination against Marek's disease is a crucial part of poultry management, as this disease can have devastating effects on flocks. The Live Marek's Vaccine works by stimulating the immune system to recognize and fight the virus, thereby reducing the incidence and severity of the disease. The other options listed are vaccines for different diseases affecting poultry. The Infectious Bursal Disease Vaccine protects against Infectious Bursal Disease, the Newcastle Disease Vaccine is designed to guard against Newcastle Disease, and the Avian Influenza Vaccine helps prevent Avian Influenza. Each of these vaccines serves a specific purpose and target, hence they are not effective against Marek's disease.