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DairyTalk 740: No German Genotype, No Complete RZG? Why Elite U.S. Bulls May Be Missing from the Rankings - by Helmut Demmelhuber
This podcast episode is based on a technical analysis investigating why U.S.-registered young genomic Holstein sires appear relatively infrequently in German RZG rankings despite their strong presence in the international breeding market. By comparing genetic evaluations for the same bulls across systems, the article examines whether statistical adjustments, different breeding objectives, or eligibility requirements explain this pattern. The findings do not support systematic discrimination against American genetics; instead, they identify genotype availability within the German evaluation…
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