Broiler chickens have a short production cycle , an effective vaccination program is essential to protect from major infectious diseases . The exact schedule varies by country, disease prevalence the following is a widely used commercial program.
This schedule reflects common commercial recommendations; vaccination programs should be tailored to local disease pressure and veterinary guidance.
Purpose of Each Vaccine
Marek’s Disease
- Prevents tumors and paralysis.
- Usually administered only once at the hatchery.
- Provides lifelong protection.
Newcastle Disease (ND)
- One of the most economically important poultry diseases.
- Initial vaccination is followed by a booster to maintain immunity.
Infectious Bronchitis (IB)
- Protects the respiratory system.
- Helps improve weight gain and feed conversion.
Infectious Bursal Disease (IBD/Gumboro)
- Protects the immune system by preventing damage to the bursa of Fabricius.
- A booster is commonly needed because maternal antibodies can interfere with early vaccination.
Vaccination Tips
- Maintain the cold chain (2–8°C) until vaccination.
- Use clean, chlorine-free water for drinking-water vaccines.
- Avoid antibiotics immediately before or after live vaccination unless advised by a veterinarian.
- Vaccinate healthy birds only.
- Follow the manufacturer’s instructions for dosage and administration.
- Keep accurate vaccination records.
Important Note
There is no single universal vaccination schedule. Commercial integrators often adjust the timing based on:
- Maternal antibody levels
- Local disease outbreaks
- Farm biosecurity
- Season
- Veterinarian recommendations
A farm with a history of Newcastle, Infectious Bronchitis, or Gumboro may require additional boosters or different vaccine strains.
This schedule is suitable as a practical reference for broiler farms raising birds from Day 1 to market age (35–42 days).
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