Best Selection Basis for Carcass Quality
Best basis of selection for estimation of carcass quality-
- Sib Selection — Correct Answer
- Individual selection
- Pedigree selection
- Progeny testing
Explanation:
Correct Answer: Sib Selection
Evaluating carcass quality requires slaughtering the animal. To keep the best genetics in the breeding pool while still measuring carcass traits, sib selection is used: some siblings (sibs) are slaughtered and their carcass traits measured, and their surviving brothers/sisters are selected or culled based on those results.
Why Sib Selection for Carcass Traits
- You cannot measure an animal's own carcass quality without killing it.
- Killing the animal removes it from the breeding pool permanently.
- Full sibs share on average 50% of their genes; half sibs share 25%.
- Slaughtering some siblings and evaluating their carcasses provides a reliable genetic indicator for the surviving sibs.
Summary — Best Method by Trait/Situation
| Situation | Best Basis of Selection |
|---|---|
| Sex-limited traits (milk, eggs) in the expressing sex | Individual selection |
| Sex-limited traits for the opposite sex (e.g., sire milk potential) | Progeny testing |
| Carcass / slaughter traits | Sib selection |
| Low h² traits | Progeny testing / Family selection |
| Multiple traits simultaneously | Selection index |
📚 About this Topic — Animal Genetics & Breeding
This multiple choice question is from Animal Genetics & Breeding, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Genetics & Breeding to strengthen your preparation.
