99HO9715 Wilonna
Whiteout
aAa: 513462 | BC: A2/A2 | KC: AA
Reg: 144156834 | DOB: 03/08/2016
Pedigree Analysis
Whiteout, a recently graduated proven sire, offers genetics packed with loads of longevity. His sire, Comestar Leader is known worldwide as a bull who makes cows that just keep going long after many of their herdmates leave the herd. A Leader daughter in Wisconsin recently set a new world record for lifetime production. On the bottom side of this pedigree is line of great cows, many of whom produced well over 200,000 lbs. Whiteout’s own dam, the EX-95 4E Linjet Avis just calved again this past summer at 16 years old!
This bull is definitely siring a consistent pattern. Similar to the Leaders, the milking Whiteout daughters we see are not the type of two year olds that jump out at you. They are wide, deep-bodied, dairy cows with a will to milk. In general, they tend to be a bit undeveloped in the rear udder and rump, but we expect them to really change with a 2nd calving. We’ve also observed that the Whiteout daughters tend to have very mellow temperaments. The oldest Whiteout daughters, which are in the Willona herd have recently calved in the 2nd time, and Bill Stoltzfus remarks that they have matured exactly as he envisioned.
| Sire: | Comestar Leader (EX) |
|---|---|
| Dam: | Wilonna Linjet Avis-ET (EX-95 3E) |
| 2nd Dam: | Wilonna Lee Ann-ET (EX-91 2E) |
| 3rd Dam: | Wilonna Skybuck Gay (EX-94 5E) |
| 4th Dam: | Skagvale Midnight Gay (VG-85 5yr) |
| 5th Dam: | Skagvale Perfect Gay-2 (EX-90 2E) |
| 6th Dam: | Skagvale Proud Gay (EX-91 2E) |
| 7th Dam: | Skagvale Telstar Gay (EX-92 2E) |
| 8th Dam: | Skagvale Gay Rockette (EX-93 4E) |
| 9th Dam: | Skagvale Delightful Gay (EX-90 15yr) |
| 10th Dam: | Skagvale Netherland Gay (EX-90 3E) |
| 11th Dam: | Puget Sound Netherland Grace (EX-93 3E) |
| MILK | FAT% | FAT LBS. | PRO% | PRO LBS. | M. SPEED | NMS | TPI |
|---|---|---|---|---|---|---|---|
| -1,379 | -0.14% | -93 | 0.01% | -42 | — | -769 | 1,723 |
| MILK | FAT% | FAT LBS. | PRO% |
|---|---|---|---|
| -1,379 | -0.14% | -93 | 0.01% |
| PRO LBS. | M. SPEED | NMS | TPI |
|---|---|---|---|
| -42 | — | -769 | 1,723 |
| SCS | DPR | CCR | HCR | PL | LV |
|---|---|---|---|---|---|
| 3.17 | 2.4 | 1.6 | -1.1 | -0.3 | 2.5 |
| — | —R | 92%R | —R | 92%R | —R |
| SCS | DPR | CCR |
|---|---|---|
| 3.17 | 2.4 | 1.6 |
| — | —R | 92%R |
| HCR | PL | LV |
|---|---|---|
| -1.1 | -0.3 | 2.5 |
| —R | 92%R | —R |
| PTAT | UDC | FLC |
|---|---|---|
| -0.73 | -1.91 | 0.76 |
| SIRE CALV. EASE | DAU. CALV. EASE |
|---|---|
| 2.3 | — |
| —R | —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).






