Genetics of Horses and Livestock
5 Written Questions
5 Matching Questions
- Temporary Environmental Effect
- Generation Interval
- Selection Intensity
- Truncation Selection
- Repeated Traits
- a Selection based on performance above a certain level.
- b Time required to replace on generation with the next generation. Shorter interval = faster rate of genetic change.
- c Strictness of selection criteria.
- d Nutrition, track conditions, illnesses
- e Traits for which individual animals have multiple performance records. (milk production, calf weaning weight)
5 Multiple Choice Questions
- Calculate a combined "breeding value" based on several traits.
- Lists of genetic predictions, accuracy values, and other information for sires within a breed.
- Genetic value as a parent. Indication of potential to contribute to offspring.
- Reduce potential measurement error, use most precise measurement as possible.
- Grouping animals that experience similar environmental effects.
5 True/False Questions
Gene Combination Value → Important for individual performance
Repeatability → Measure of the strength of the relationship between repeated records for a trait in a population.
Producing Ability → Measure of the strength of the relationship between P and BV for a trait in a population.
Correlation → Indicator of the expected change in one trait relative to change in another trait in a population.
Accuracy of Selection → Correlation between true BV and predicted breeding value for a trait in a population.