Selection Using Progeny Testing
Progeny testing is used for the selection of-
- Dam
- Sire — Correct Answer
- Son
- Daughter
Explanation:
Correct Answer: Sire
Progeny testing is primarily and most effectively used for evaluating and selecting the Sire (male parent). Because a sire contributes genes to a large number of offspring, assessing progeny performance gives the most accurate estimate of a sire's true breeding value.
Progeny Testing — Key Facts
- Definition: Selection based on the performance of an animal's progeny (offspring)
- Used for: Selection of Sire
- Most effective when: Heritability of the trait is low
- Nature: Described as a "two-way selection system"
- Most effective basis of selection: Progeny testing (best & most effective)
- Most accurate basis of selection: Individual/mass selection
- In NBS (Nucleus Breeding Scheme): Sibling test is preferred over progeny testing because it gives shorter generation interval → higher genetic gain per year
Comparison — Basis of Selection
| Method | Based on | Best for |
|---|---|---|
| Individual selection | Own phenotype | High h² traits; simplest & most rapid |
| Pedigree selection | Ancestors' performance | High h² traits |
| Progeny testing | Progeny performance | Low h² traits; sire selection |
| Family selection | Collateral relatives | Low h² traits |
Why Other Options Are Wrong
- Dam → Dam selection is done via MPPA/ERPA (repeatability-based); progeny testing is for sire
- Son / Daughter → offspring, not selected via progeny testing
📚 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.
