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DairyTalk 104: Single-Step Revolution - How Germany Redefined Genetic Evaluation - by Helmut Demmelhuber
A quiet revolution in genetic evaluation:
Germany’s Single-Step system integrates all available genomic, performance, and health data into one calculation - raising accuracy and reshaping bull rankings worldwide.
The result? Stronger reliability for functional traits like RZHealth and RZLifespan, and logical shifts compared to systems abroad.
This episode breaks down what Single-Step really changes - and why it might be the most accurate breeding tool yet. With comments on a "QZeit"-article (10/2025) by Jens Kirch: https://www.qnetics.de
The skinny
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