5 Written questions
5 Matching questions
- Replacement Rate
- Truncation Selection
- Sire Summaries
- Genetic Variation
- a Rate at which selected individuals replace existing parents in the population.
- b Selection based on performance above a certain level.
- c Variability of BV for a trait in the population. The greater the genetic variation, the greater the difference between superior and inferior animals.
- d Calculated using covariance, a measure of how two traits or values vary together in a population.
- e Lists of genetic predictions, accuracy values, and other information for sires within a breed.
5 Multiple choice questions
- Time required to replace on generation with the next generation. Shorter interval = faster rate of genetic change.
- Grouping animals that experience similar environmental effects.
- Genetic value as a parent. Indication of potential to contribute to offspring.
- Set a minimum performance level for each trait being considered. Cull any animal that does not meet the standard for every trait.
- Nutrition, track conditions, illnesses
5 True/False questions
Characteristics of Repeatability → -influences resemblance among relatives
-influences accuracy of selection and rate of genetic change
Heritability → Measure of the strength of the relationship between P and BV for a trait in a population.
Regression → Indicator of the expected change in one trait relative to change in another trait in a population.
Environmental Uniformity → Manage animals to keep environmental effects as similar as possible across the population.
Producing Ability → Measure of the strength of the relationship between repeated records for a trait in a population.