Question

The digestible crude protein content in wheat straw is around:

• A. 10%
• B. 5%
• C. 0%
• D. 15%

Hint:

Crop residues like wheat straw and paddy straw have highly complex structural carbohydrates that bind nitrogen.
Hence, their DCP is standardly considered \(0\%\) in animal nutrition formulation tables.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Digestible Crude Protein (DCP) represents the portion of crude protein in feed that can be absorbed by the animal's digestive tract.

Step 3: Detailed Explanation:
1. Wheat straw is a poor-quality, highly lignified crop residue.
2. While wheat straw contains a very small amount of crude protein (around \(3\%\) to \(4\%\)), it is heavily bound to cell wall components like lignin and silica.
3. Consequently, this protein is highly resistant to microbial and enzymatic degradation in the digestive tract.
4. The digestible crude protein (DCP) value of wheat straw is virtually zero (\(0\%\)).

Step 4: Final Answer
The correct option is (C).