Question:
Which of the following statements are true:
(A). A separate sire and dam line is required for the production of commercial chicken crosses.
(B). The superiority of crosses over the average performance of their parent or over the better parent is called di-allele phenomenon.
(C). In flock mating, one male is required to mate 10-12 and 8-10 females for egg and meat type birds respectively.
(D). The ideal broiler possess a “V” shape body conformation.
Choose the correct answer from the options given below:
Which of the following statements are true:
(A). A separate sire and dam line is required for the production of commercial chicken crosses.
(B). The superiority of crosses over the average performance of their parent or over the better parent is called di-allele phenomenon.
(C). In flock mating, one male is required to mate 10-12 and 8-10 females for egg and meat type birds respectively.
(D). The ideal broiler possess a “V” shape body conformation.
Choose the correct answer from the options given below:
(A). A separate sire and dam line is required for the production of commercial chicken crosses.
(B). The superiority of crosses over the average performance of their parent or over the better parent is called di-allele phenomenon.
(C). In flock mating, one male is required to mate 10-12 and 8-10 females for egg and meat type birds respectively.
(D). The ideal broiler possess a “V” shape body conformation.
Choose the correct answer from the options given below:
Show Hint
- Hybrid Vigor Heterosis: Superiority of crosses over parents.
- Layer body shape: Wedge/V-shape (associated with reproductive capacity).
- Broiler body shape: Blocky/U-shape (associated with meat yield).
- Male-to-female ratio: 1:10--12 for layers and 1:8--10 for broilers.
- Layer body shape: Wedge/V-shape (associated with reproductive capacity).
- Broiler body shape: Blocky/U-shape (associated with meat yield).
- Male-to-female ratio: 1:10--12 for layers and 1:8--10 for broilers.
Updated On: Jul 24, 2026
- (A), (B) and (D) only.
- (A) and (C) only.
- (B), (C) and (D) only.
- (A), (C) and (D) only.
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Commercial poultry production relies on hybrid crossbreeding systems to produce high-performing broilers (meat-type) and layers (egg-type) by utilizing heterosis (hybrid vigor).
Step 2: Detailed Explanation:
Let us evaluate each of the given statements:
- Statement (A): Commercial hybrid chickens are produced by crossing specific, specialized lines.
A male-only line (sire line) is selected for growth rate and meat yield, while a female-only line (dam line) is selected for egg production and hatchability, making Statement (A) correct.
- Statement (B): The superiority of crossbred offspring over the average of their parents or the better parent is defined as heterosis or hybrid vigor (not the di-allele phenomenon).
Therefore, Statement (B) is incorrect.
- Statement (C): In flock mating, the recommended male-to-female ratio is based on the body weight and activity of the birds:
For light egg-type birds (layers), 1 male is mated with 10 to 12 females.
For heavy meat-type birds (broilers), 1 male is mated with 8 to 10 females to ensure high fertility rates.
Therefore, Statement (C) is correct.
- Statement (D): An ideal broiler should possess a broad, blocky, rectangular, or "U" shaped body conformation to support maximum breast meat development.
A "V" or wedge-shaped body conformation is characteristic of high-producing egg-laying hens, not broilers.
Therefore, Statement (D) is incorrect.
Since only statements (A) and (C) are correct, option (B) is the correct choice.
Step 3: Final Answer:
The true statements are (A) and (C) only.
Commercial poultry production relies on hybrid crossbreeding systems to produce high-performing broilers (meat-type) and layers (egg-type) by utilizing heterosis (hybrid vigor).
Step 2: Detailed Explanation:
Let us evaluate each of the given statements:
- Statement (A): Commercial hybrid chickens are produced by crossing specific, specialized lines.
A male-only line (sire line) is selected for growth rate and meat yield, while a female-only line (dam line) is selected for egg production and hatchability, making Statement (A) correct.
- Statement (B): The superiority of crossbred offspring over the average of their parents or the better parent is defined as heterosis or hybrid vigor (not the di-allele phenomenon).
Therefore, Statement (B) is incorrect.
- Statement (C): In flock mating, the recommended male-to-female ratio is based on the body weight and activity of the birds:
For light egg-type birds (layers), 1 male is mated with 10 to 12 females.
For heavy meat-type birds (broilers), 1 male is mated with 8 to 10 females to ensure high fertility rates.
Therefore, Statement (C) is correct.
- Statement (D): An ideal broiler should possess a broad, blocky, rectangular, or "U" shaped body conformation to support maximum breast meat development.
A "V" or wedge-shaped body conformation is characteristic of high-producing egg-laying hens, not broilers.
Therefore, Statement (D) is incorrect.
Since only statements (A) and (C) are correct, option (B) is the correct choice.
Step 3: Final Answer:
The true statements are (A) and (C) only.
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