Question

Vent of a non-layer hen is
A. Small
B. Dry
C. Round
D. Large
E. Moist
Choose the correct answer from the options given below

• A. D only
• B. B, C and D only
• C. C, D and E only
• D. A, B and C only

Hint:

Layer vs Non-Layer Vent Features:
Active Layer = Large, Moist, Oval, Bleached/Pale.
Non-Layer = SMALL, DRY, ROUND (Puckered), Yellow.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Poultry culling and layer assessment: physical anatomical differentiation between active laying hens and non-laying/culled birds.

Step 2: Detailed Explanation:
Physical examination characteristics for culling non-laying hens:
1. Non-Layer (Out of Production) Hen:
- A. Small
- B. Dry
- C. Round (Puckered/contracted) and yellow-pigmented.
- Pubic bones close together ($< 1-2$ fingers width), abdomen hard and contracted.
2. Active Layer (In Production) Hen:
- D. Large
- E. Moist
- Oval/Crescentic, dilated, and bleached white.
- Pubic bones wide apart ($> 3-4$ fingers width), abdomen soft, deep, and pliable.
Thus, the vent of a non-layer hen is A, B, and C only.

Step 3: Final Answer:
Hence, the vent of a non-layer hen is A, B and C only, corresponding to option (D).