Sib Selection Category
The sib selection is a type of:
- Pedigree selection
- Family selection — Correct Answer
- Progeny testing
- Individual selection
Explanation:
Correct Answer: Family selection
Sib selection is a special form of Family selection. In family selection, the unit of selection is the entire family. The family's mean performance is used to judge whether any member should be selected or culled.
Family Selection — Key Features
- Based on performance of collateral relatives (siblings — full sibs or half sibs)
- Sib selection: Specific type where some siblings are sacrificed to evaluate traits (e.g., carcass quality), and surviving sibs are selected based on siblings' results
- Most effective when h² is low
- Best aid for traits that require slaughter to measure (e.g., carcass quality in sheep, meat tenderness)
Nucleus Breeding Scheme — Sib Test
- In Nucleus Breeding Schemes (NBS), sire selection is based on sibling test
- Sibling test is less accurate than progeny testing but has shorter generation interval → higher genetic gain per year → preferred in NBS
📚 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.
