Question

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A): Eggs need to be placed in vertical position (broad end up) in setter and horizontal in hatcher.
Reason (R): Placing of eggs in horizontal position saves the space and allows proper chick development.
In light of the above statements, choose the correct answer from the options given below.

• A. Both (A) and (R) are true and (R) is the correct explanation of (A).
• B. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
• C. (A) is true but (R) is false.
• D. (A) is false but (R) is true.

Hint:

Setting eggs with the narrow end up is a common hatchery mistake.
It causes the embryo's head to develop toward the narrow end, away from the air cell, leading to a high rate of suffocation and poor hatchability.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Incubation involves two distinct phases: setting (the first 18 days for chicken eggs) and hatching (the final 3 days).
Each phase has specific egg-positioning requirements to optimize embryo development and hatchability.
Detailed Explanation:
Let us analyze the Assertion and the Reason:
- Assertion (A): Eggs are set vertically with the broad end up in the setter tray during the first 18 days.
The air cell is located at the broad end of the egg, and setting the egg broad end up ensures the developing embryo can access this air cell for pulmonary respiration before pipping.
On the 18th day, eggs are transferred to the hatcher, where they are laid horizontally in trays.
This horizontal positioning gives the chick space to turn, pip, and emerge from the shell.
Therefore, the Assertion (A) is true.
- Reason (R): The reason claims that placing eggs in a horizontal position saves space.
This is incorrect.
Placing eggs vertically (broad end up) is what saves space in the incubator, allowing more eggs to be packed per square foot of tray.
Horizontal placement requires significantly more space.
While horizontal placement in the hatcher is necessary for proper chick development, it is not space-saving.
Therefore, the Reason (R) is false.

Step 2: Final Answer:
The Assertion (A) is true, but the Reason (R) is false.