Concept:
Poultry diseases can be caused by viruses, bacteria, fungi, or parasites. It is important to distinguish between viral and bacterial diseases.
• Viral diseases in poultry include:
• Ranikhet disease (Newcastle disease)
• Avian influenza (bird flu)
• Infectious bronchitis
• Bacterial diseases include:
• Pullorum disease (caused by Salmonella pullorum)
Step 1: Understand the requirement.
We need to identify the disease that is not viral.
Step 2: Analyze each option.
• (A) Ranikhet: Viral
• (B) Avian influenza: Viral
• (C) Pullorum: Bacterial (exception)
• (D) Bronchitis: Viral
Step 3: Conclusion.
Pullorum is not a viral disease, hence it is the correct answer.
Final Answer: Option (C)