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5 Written questions

5 Matching questions

  1. Selection Index
  2. Generation Interval
  3. Repeatability
  4. Trait Ratios
  5. Selection Intensity
  1. a Measure of the strength of the relationship between repeated records for a trait in a population.
  2. b Time required to replace on generation with the next generation. Shorter interval = faster rate of genetic change.
  3. c Calculate a combined "breeding value" based on several traits.
  4. d Ratio of individual performance compared to contemporary group mean.
  5. e Strictness of selection criteria.

5 Multiple choice questions

  1. Rate at which selected individuals replace existing parents in the population.
  2. Training, permanent injury, developmental programming.
  3. Genetic value as a parent. Indication of potential to contribute to offspring.
  4. performance potential for a repeated trait in an individual.
  5. Multiple trait selection reduces selection intensity compared to selection for a single trait.

5 True/False questions

  1. Independent Culling LevelsSet a minimum performance level for each trait being considered. Cull any animal that does not meet the standard for every trait.

          

  2. Truncation SelectionSelection based on performance above a certain level.

          

  3. Environmental UniformityManage animals to keep environmental effects as similar as possible across the population.

          

  4. BLUP ModelsRatio of individual performance compared to contemporary group mean.

          

  5. Tandem SelectionSelection based on performance above a certain level.