Cattle Consequences for the use of species and breeds
4.3. Insurance against the loss of resources with a high strategic value
Recent outbreaks of diseases, wars and the development of biological weapons created political awareness for the value of genetic resources currently in use for food production. When these resources are destroyed, the investments in it are lost and breeding material should be obtained from abroad. A back up of the genetic material currently in use, preserved in a gene bank, gives the opportunity for a quick restart of a breeding program and safeguards national food production systems.4.4. Opportunities for research
World-wide in animal production, molecular geneticists are searching for genes, which inluence production, quality of products, and health and reproduction traits of animals. In this search, the analysis of a high variety of breeds and crosses between breeds with extreme characteristics has played an important role. he latter guarantees a high degree of heterozygosity and linkage disequilibrium, which is required to detect associations between highly polymorphic marker loci and polymorphism’s at quantitative and qualitative trait loci.4.5. Present socio-economic value
In many countries and areas of the world local breeds guarantee a livelihood in harsh areas where high-input high-output livestock systems are not feasible. In addition, the local breeds are used by a small group of farmers sometimes for special reasons e.g. biological farming or grazing of marginal lands or special purposes e.g. local products for niche markets. he development of breeding programs for these local breeds is too costly for breeding organisations and the absence of a breeding program is a direct threat for the existence of the breed. However, present socio-economic value, which creates income for large human populations in developing countries and for small farmers in rural areas of developed countries like the Alps in Europe and the renewed interest for the development of regional products, justify the establishment of a conservation program.4.6. Cultural and historic reasons
Many breeds are the result of a long domestication process and a long period of adaptation to local circumstances. hey relect a long history of symbioses between mankind and farm animals and can help to clarify adaptation processes, which can still be worthwhile for the management of animals in present production systems. More generally they are documents of the history of rural populations and as such they can beChapter 1. Introduction
Parts
» utilisation and conservation of farm animal genetic resources
» Challenges for food production in livestock systems
» Changes in livestock systems
» Cattle Consequences for the use of species and breeds
» Introduction utilisation and conservation of farm animal genetic resources
» Opportunities to meet future market demands
» Insurance against future changes in production circumstances
» Insurance against the loss of resources with a high strategic value
» Cultural and historic reasons
» History of initiatives to stop genetic erosion at global and regional levels
» Threats Opportunities and threats for farm animal genetic resources
» Conservation methods to be applied
» National governments Stakeholders for in vivo and in vitro conservation programs
» Objectives in conservation and utilisation of farm animal genetic resources
» Techniques Strategies for moving from conservation to utilisation
» Options for utilisation of self-sustaining local breeds
» Strategies for moving from conservation to utilisation
» Cryoconservation Strategies for moving from conservation to utilisation
» Costs Strategies for moving from conservation to utilisation
» Making the decision Strategies for moving from conservation to utilisation
» Introduction What is genetic diversity?
» Sub-populations and evolutionary forces
» The use of pedigree for measuring diversity
» The impact of DNA information
» Genome-wide patterns of diversity
» Measuring changes in diversity
» Relating diversity measures to F and ΔF
» Conclusion What is genetic diversity?
» Genomics reveals domestication history and facilitates breed development
» Marker and sequence information
» Detection of selection How have the events in breed history modified the genetic variation?
» Prediction of heterosis using genetic distances
» Conclusions Genomics reveals domestication history and facilitates breed development
» Why measure genetic diversity?
» Genetic distances Genetic distances, F-statistics and kinships
» Measuring genetic diversity in farm animals
» Weitzman diversity Weitzman and Core set diversities
» Genetic distances, kinships and conservation decisions
» Concluding remarks Measuring genetic diversity in farm animals
» Introduction Selection of breeds for conservation
» What are the objectives of a conservation effort?
» Is the risk-strategy efficient for the selection of breeds?
» Is the maximum-diversity-strategy efficient for the selection of breeds?
» Selection of breeds for conservation
» Is the maximum-utility-strategy efficient for the selection of breeds?
» What are the practical aspects?
» Inbreeding and inbreeding rate
» Genetic contributions Genetic contributions and inbreeding
» Optimum designs Minimising ΔF in conservation schemes
» Genetic contributions and inbreeding
» Optimum contributions: The problem
» Predicting ΔF Genetic contributions and inbreeding
» Guidelines for best practice
» The effective population size
» Operation of conservation schemes
» Cryo-conservation schemes Operation of conservation schemes
» General aspects Integrating live and cryoconservation
» Cryo-back-up live conservation schemes
» Existing global regulations Practical implications of utilisation and management
» Practical implications of utilisation and management
» An example of a national action plan for utilisation and management
» Economic considerations Practical implications of utilisation and management
» Utilisation and conservation of genetic diversity
» Monitoring role for the national managers
» Sustainable breeding schemes Practical implications of utilisation and management
» Future policies for animal genetic resources
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