The diverse and changing nature of agricultural development favors a dynamic rather than a static approach to animal genetic resources management. Ecosystems differ widely and are constantly evolving in production and marketing environments in response to climatic, economic, technological, social and political factors. Animal genetic resources to provide for long-term requirements may be most effectively assured by more efficient use of these resources to meet near-term requirements. Much of the concern about providing genetic diversity to meet long-term requirements may arise from failure to establish short-term breeding goals appropriate for each of the many diverse ecosystems that exist on a global basis. To meet both near-term and long-term requirements for genetic variation, effectively and simultaneously, breeding goals should focus on achieving and maintaining optimum adaptation to each of the continuously changing production and marketing environments of diverse ecosystems. This approach should assure great diversity of global animal genetic resources that may be needed for long-term adaptation to unforeseen changes in production and marketing requirements. Carefully monitored and continuously adjusted breeding goals that focus on bioeconomic efficiency for each ecological zone are suggested in lieu of primary emphasis on long-term storage of sperm, ova or embryos, for meeting a major part of the long-term requirement for genetic variation.

K. Gregory

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume XII. Biotechnology, selection experiments, parameter estimation, design of breeding systems, management of genetic resources., , 492–499, 1986
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