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DairyTalk 702: What Really Drives RZG? Why Milk Production May Influence Rankings More Than Expected - by Helmut Demmelhuber
This podcast episode is based on an analysis by Helmut Demmelhuber that examines how German Holstein breeding indexes actually behave using data from more than 3,000 bulls and 1,500 cows. The findings raise an important distinction between published trait weights and the influence individual traits can ultimately have on rankings such as RZG, RZ€, and RZÖko, with milk production potentially playing a larger role than the headline percentages suggest. The article also questions the absence of feed efficiency from major indexes and explores the relationship between body size, functional…
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