DairyTalk 361: Few Bloodlines, Big Impact: Structural Tensions in North American Breeding - by Helmut Demmelhuber

This podcast episode draws on an expert article examining the
increasing genetic concentration in North American cattle
breeding. It highlights how a small number of elite families now
dominate the production of top-ranking sires, raising concerns
about inbreeding and reduced biological diversity. The analysis
explores how breeding organizations balance rapid genetic
progress with the need to safeguard long-term herd resilience.
Strategies such as introducing alternative bloodlines and
international genetics are discussed, though their adoption is
constrained by market preferences for top genomic rankings. The
result is a structural tension with significant implications for
the sustainability of dairy production systems. With comments on
a "Holstein International"-article (April 2026) by Jan Bierma and
Han Hopmann: https://www.holsteininternational.com