Hits: 28 During the 57th Annual Membership Meeting, Rule Amendment No. 1 passed. Effective immediately, any natural service sire born on or after January 1, 2025, must now meet the same DNA requirements (GGP-100K testing) as AI sires and donor dams before any of their progeny can be registered. To help clarify the rule change, see the examples below: Example Scenario 1: On April 5, 2026, Mr. Smith registers bull calf 1P. The calf is the result of natural service.