2025 April Base Change Information

FAQS

Does the base change re-rank sires?

No, the base change does not re-rank sires.

How does a base change influence sire data?

The genetic base is adjusted so that PTA values continue to provide a reasonable indication of an animal's genetic improvement potential.

Is a base change inherently good or bad?

Neither. It’s just a rescaling of PTA values.

How does this base change compare to previous base changes?

The 2025 base change is bigger than previous adjustments, but this is good news! It means that our cows are improving faster than ever. The amount of base change is a direct result of the genetic progress made by the industry in the previous five years.

Should I make any changes in my herd to reflect the base change?

It’s a great opportunity to evaluate your genetic strategy and leverage an index that aligns with your herd's goals. Using an index like Herd Health Profit Dollars (HHP$^®) is the most effective approach to improve multiple, economically important traits at the same time.

Impact of April 2025 Base Adjustments

PODCAST S.2 EP.12: BASE CHANGE — APRIL 2025

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UPCOMING GENETIC BASE CHANGE: WHAT TO EXPECT

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NAAB BASE CHANGE VIDEO

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NAAB UPDATE ON THE APRIL 2025 BASE CHANGE

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