Correlation Between Milk Yield and Fat Yield
The genetic correlation between milk yield & fat yield is generally-
- Negative & high
- Negetive & low
- Positive & high — Correct Answer
- Positive & low
Explanation:
Correct Answer: Positive & high
The genetic correlation between milk yield and fat yield in dairy animals is positive and high — cows that produce more milk also tend to produce more total fat (in kg).
Important Correlations in Animal Science
| Traits | Correlation | Explanation |
|---|---|---|
| Milk yield & fat yield (kg) | Positive & high ✓ | More milk → more total fat produced |
| Milk yield & fat% | Negative | High yielding cows have lower fat concentration |
| Egg size & egg weight | Positive | Larger eggs are heavier |
| Number of eggs & size of eggs | Negative | More eggs → smaller eggs |
| Birth weight & weaning weight | Positive | Heavier calves at birth → heavier at weaning |
Types of Correlation
- Correlation coefficient (r): range −1 to +1
- r = +1: perfect positive; r = −1: perfect negative; r = 0: no correlation
- Genetic correlation causes: Pleiotropy (permanent) and Linkage (temporary)
📚 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.
