Question

Crazy chick disease of chicks occurs due to deficiency of -

• A. Thiamine
• B. Niacin
• C. Tocopherol
• D. Riboflavin

Hint:

Crazy chick disease is caused by Vitamin E (Tocopherol) deficiency.
Other poultry vitamin deficiency signs include: Polyneuritis (Thiamine deficiency) and Curled toe paralysis (Riboflavin deficiency).

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Nutritional deficiencies of essential vitamins in rapidly growing chicks can cause severe degenerative disorders of the central nervous system.

Step 2: Detailed Explanation:
1. "Crazy chick disease" is the common name for nutritional encephalomalacia in young chicks.
2. This pathological condition is caused by a dietary deficiency of Vitamin E (Tocopherol), which is a major lipid-soluble antioxidant.
3. In the absence of sufficient tocopherol, highly active unsaturated lipids in the developing brain undergo rapid lipid peroxidation, leading to cerebellar softening, hemorrhages, and necrosis.
4. Clinically, affected chicks display ataxia, head tremors, twisting of the neck, and backward falling (hence the term "crazy chick").

Step 3: Final Answer:
The correct option is 3, which corresponds to Tocopherol.