Question

Which is the recommended protein level for carp grow-out feed?

• A. 15–20%
• B. 20–25%
• C. 30–35%
• D. 40–45%

Hint:

Grow-out carp → 20–25% protein ideal.

Answer 1

The Correct Option is B

Step 1: Carp grow-out diets need moderate protein to ensure growth without excess cost.
Step 2: Recommended level is 20–25%.
Step 3: Higher protein (>30%) is for carnivorous species or fry.

Answer 2

Life-Stage Comparison: Protein requirements drop as fish move from fry/fingerling stage to grow-out (adult growth) stage — rank the given ranges by life stage.

Grow-out carp need only MODERATE protein (20–25%) since growth has slowed compared to fry stage, keeping feed cost efficient without sacrificing growth.

15–20% is too low for healthy growth, while 30–35% and 40–45% match higher-protein needs of carnivorous species or very young fry, not grow-out carp.