Heritability Category of Production Traits
Heritability of production is-
- Low
- Medium — Correct Answer
- High
- None
Explanation:
Correct Answer: Medium
Heritability (h²) is the proportion of phenotypic variance due to additive genetic variance. Productive traits have medium heritability because they are significantly influenced by both genetics and environment.
Heritability Classification of Traits
| Category | h² Range | Examples | Best Selection Method |
|---|---|---|---|
| Low (< 0.20) | Reproductive / Fitness traits | Litter size, conception rate, fertility | Progeny testing, Family selection |
| Medium (0.20–0.40) | Production traits | Milk yield, egg production, growth rate | Combination methods |
| High (> 0.40) | Growth / Quality traits | Fat%, carcass length, body weight, fleece weight | Individual selection, Pedigree selection |
Key Formulae for Heritability
- Heritability (broad sense): H²B = VG / VP
- Heritability (narrow sense): h²N = VA / VP
- Range: 0 to 1; Repeatability is the upper limit of heritability
- h²N is the regression of breeding value on phenotypic value
📚 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.
