Topics:
Animal Refresher, Poultry Science
Diseases Against Which Broilers Are Vaccinated
The broiler is commonly vaccinated against:
- Marek's disease, Ranikhet & Gumboro — Correct Answer
- Marek's disease, Chicken pox, Gumboro, Ranikhet
- Marek's disease, Chicken pox, Gumboro
- Marek's disease, Chicken pox, Ranikhet
Explanation:
Correct Answer: Marek's disease, Ranikhet & Gumboro
Broilers are routinely vaccinated against only three viral diseases: Marek's disease, Ranikhet (Newcastle Disease), and Gumboro (Infectious Bursal Disease — IBD).
About Each Disease
- Marek's disease: Caused by a herpesvirus; causes tumours of nerves and organs (lymphoma); vaccine (HVT — Herpesvirus of Turkey) given at day-old chick.
- Ranikhet (Newcastle Disease): Highly contagious; caused by Avian paramyxovirus type-1; causes respiratory, nervous, and digestive signs; F1 strain vaccine used.
- Gumboro (IBD): Caused by a birnavirus; destroys the Bursa of Fabricius causing immunosuppression; the bursa is the B-lymphocyte maturation organ in birds.
Note on Fowl Pox
Fowl pox vaccination is done in layers, not routinely in broilers (because broilers have a short production life of only 6 weeks, and pox takes longer to be a significant risk).
📚 About this Topic — Animal Refresher
This multiple choice question is from Animal Refresher, Poultry Science. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Refresher to strengthen your preparation.
