5 Written Questions
4 Matching Questions
- Selection Intensity
- Replacement Rate
- Accuracy of Selection
- a Rate at which selected individuals replace existing parents in the population.
- b Strictness of selection criteria.
- c Correlation between true BV and predicted breeding value for a trait in a population.
- d Indicator of the expected change in one trait relative to change in another trait in a population.
5 Multiple Choice Questions
- Selection based on performance above a certain level.
- Traits for which individual animals have multiple performance records. (milk production, calf weaning weight)
- performance potential for a repeated trait in an individual.
- Reduce potential measurement error, use most precise measurement as possible.
- Manage animals to keep environmental effects as similar as possible across the population.
5 True/False Questions
Breeding Value → performance potential for a repeated trait in an individual.
Tandem Selection → Selection based on performance above a certain level.
Characteristics of Repeatability → -not fixed, varies across populations and environments
-used for making culling decisions
Correlation → Calculated using covariance, a measure of how two traits or values vary together in a population.
BLUP Models → Ratio of individual performance compared to contemporary group mean.