International genetic evaluation of dairy cattle can provide valuable selection tools to dairy producers around the world. The demand for such development has grown as international exchange of genetic material has been rapidly increasing. Several factors affecting the success of a global evaluation system are discussed in this article. Alternative methods are described and assessed. Their relative merits depend on two inversely proportional components: simplicity of implementation and accuracy of results. The method that currently combines best these two attributes is computation of a single international proof following linear model analysis of national evaluations of bulls across country. Extensive research experience regarding this method has been gained, showing its feasibility for large scale applications. Further research is planned to determine the complete global evaluation system of the future which should effectively cover the maximum number of populations, environments, and breeding goals.
Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 17. Genetics and breeding of dairy and beef cattle, swine and horses, , 3–10, 1994
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