99HO12027 Wilonna
Denali
aAa: 456132 | BC: A1/A2 | KC: AB
100% Reg: 3211750814 | DOB: 09/05/2020
Pedigree Analysis
This Dundee son hails from Bill Stoltzfus’ respected breeding. When you think of Wilonna, most likely the names that come to mind are “Avis” and the reknown Skagvale Gay maternal line that made so many great ones. But there is another cow family which has transmitted exceptionally well at Wilonna, churning out many high-scoring, durable, long-lived cattle…the “Dream” family.
Denali’s dam, an EX-91 2E Boss Iron daughter is a poster child of trouble-free longevity. She calved in nearly every year for nine lactations and produced over 214,000 lbs of milk. Behind her is an EX-92 Rubens x EX-93 2E Redmarker x EX-92 5E Inspiration x EX-92 3E Triple-Threat x EX-91 Elevation, a who’s who of respected Holstein sires.
Denali, with his unique pedigree and rare aAa code, should be a great option for dairymen looking to add strength, width and rugged longevity into their genetics.
| Sire: | Regancrest Dundee-ET (EX-95) |
|---|---|
| Dam: | Wilonna Iron Deluxe-ET (EX-91 2E) |
| 2nd Dam: | Wilonna Rubens Debra (EX-92) |
| 3rd Dam: | Wilonna RM Dreamboat-Red (EX-93 2E) |
| 4th Dam: | Wilonna Inspir Dream-Red (EX-92 5E) |
| 5th Dam: | Golden-Harvest Tri Danielle (EX-92 3E) |
| 6th Dam: | Hilltopper Elevation Dancer (EX-91) |
| 7th Dam: | Hty-Hanover Ruben Dandy (EX-92 3E) |
| MILK | FAT% | FAT LBS. | PRO% | PRO LBS. | M. SPEED | NMS | TPI |
|---|---|---|---|---|---|---|---|
| -1,567 | -0.07% | -83 | 0.01% | -50 | 6.6 | -860 | — |
| MILK | FAT% | FAT LBS. | PRO% |
|---|---|---|---|
| -1,567 | -0.07% | -83 | 0.01% |
| PRO LBS. | M. SPEED | NMS | TPI |
|---|---|---|---|
| -50 | 6.6 | -860 | — |
| SCS | DPR | CCR | HCR | PL | LV |
|---|---|---|---|---|---|
| 3.27 | 1.7 | 1.3 | -0.6 | -3.5 | -4.1 |
| — | 39%R | 39%R | 38%R | 43%R | 41%R |
| SCS | DPR | CCR |
|---|---|---|
| 3.27 | 1.7 | 1.3 |
| — | 39%R | 39%R |
| HCR | PL | LV |
|---|---|---|
| -0.6 | -3.5 | -4.1 |
| 38%R | 43%R | 41%R |
| PTAT | UDC | FLC |
|---|---|---|
| — | — | — |
| SIRE CALV. EASE | DAU. CALV. EASE |
|---|---|
| 3.1 | 2.7 |
| 65%R | 50%R |
305-AA is the standardized milk, fat, and protein yield estimate used by CDCB to compare cows of different ages, parities, breeds, and regions on equal footing. According to CDCB and USDA AGIL, it represents “a 305-day lactation record at 36 months of age” — hence “Average Age,” or AA.
It replaced 305-ME (Mature Equivalent) in June 2024 for published records and was implemented in the calculation of CDCB genetic evaluations effective August 13, 2024. ME had been the standard since 1935.
How it is calculated
The new factors are applied as a series of separate multipliers for age-parity, season, previous days open, and milking frequency. Lactation records are adjusted upward or downward to what the cow would have been expected to produce as a 36-month-old, milked twice daily for 305 days.
Key adjustments include:
- Age-parity: Standardized to 36 months rather than ME’s mature range of 61–86 months depending on breed.
- Season/climate: Seasonal effects are now estimated within five regions defined by the average climate zone scores for each state, replacing the old three east-to-west geographic regions.
- Milking frequency: Still standardized to 2x milking, unchanged from ME.
- Previous days open: The methodology for this adjustment is also unchanged from ME.
Sources: CDCB/USDA AGIL, “August 2024 Evaluations: What’s New?” (July 11, 2024); CDCB, “Introducing 305-AA: The New Standardized Yield Measurement” (June 21, 2024).



