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Related Experiment Videos

Defining multiple-trait objectives for sustainable genetic improvement

J P Gibson1, J W Wilton

  • 1Centre for Genetic Improvement of Livestock, Department of Animal and Poultry Science, University of Guelph, Ontario, Canada.

Journal of Animal Science
|October 22, 1998
PubMed
Summary

Genetic improvement requires a long-term strategy, as short-term economic models conflict with future progress. Analyzing future conditions and managing risk through diverse genetic stocks are crucial for sustained genetic gain.

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Area of Science:

  • Animal Breeding and Genetics
  • Quantitative Genetics
  • Agricultural Economics

Background:

  • Genetic improvement is a long-term process, with future gains dependent on past progress.
  • Economic evaluations often use discounting, creating a short-term focus that contradicts long-term genetic improvement goals.
  • Shifts in management, markets, and genetic potential can impede breeding objectives.

Purpose of the Study:

  • To address the conflict between short-term economic evaluations and the long-term nature of genetic improvement.
  • To explore methods for deriving optimal economic weights that align with long-term breeding goals.
  • To investigate strategies for managing risk and uncertainty in long-term genetic improvement programs.

Main Methods:

  • Application of nonlinear optimization techniques to determine annual economic weights over various timeframes.

Related Experiment Videos

  • Derivation of economic weights for a single, specified future date to approximate optimal solutions.
  • Analysis of risk associated with future production and marketing environments.

    • Main Results:

    • Nonlinear optimization provides a method to find optimal economic weights for long-term genetic improvement.
    • Deriving weights for a single future date can yield nearly optimal solutions.
    • Maintaining diverse genetic stocks can mitigate risks associated with uncertain future environments.

    Conclusions:

    • Long-term genetic improvement necessitates a strategic perspective that transcends short-term economic discounting.
    • Risk management through genetic diversity and international collaboration may be essential for costly, long-term breeding programs.
    • Defining multi-trait objectives requires careful consideration of future technical, environmental, and market conditions.