Can We Get Calving Ease Without Sacrificing Performance?
- ZISK
- 1 day ago
- 1 min read

Sire selection for natural service or artificial insemination (AI) is critical. Over time, 90% of genetic change is the result of sire selection. Your bull (or bulls) contribute more to the genetic makeup of your herd in a calving season than a cow does in her lifetime.
Effective sire selection should be based on genetic values in the form of EPDs or expected progeny differences. Selection on EPDs is 7 to 9 times more effective than selection based on individual performance data, within herd ratios or performance testing because all this information (plus more) is taken into consideration in calculating EPDs.
Selecting genetically superior sires is the fastest approach to herd improvement and bottom-line profitability when you select genetic superiority that matches your management, production and marketing system.
By Mark Z. Johnson
April 28, 2025
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