Aras P
525HO43 Drouner
Aras P
aAa: 324156| BC: A2/A2
99% Reg: 574040998| DOB: 05/31/2018
- A proven Red & White bull
- Kamps-Hollow Altitude family
- Improves milk production
- Good lactation persistency
- Great confirmation
- Polled & A2/A2
Aras P Daughter:
Grashoek Tonnie 108 PP (VG-85)
Aras P Daughter:
Grashoek Rita 117 PP (GP-84)
Aras P Daughter:
Grashoek Becky 45 (VG-86)
2nd Dam of Aras P:
Drouner Aiko 1288 (EX-90)
| Sire: | Born P |
|---|---|
| Dam: | Aiko 1411 (VG-89) |
| 2nd Dam: | Drouner Aiko 1288 (EX-90) |
| 3rd Dam: | Drouner Ajdh Aiko (VG-87) |
| 4th Dam: | Khw Goldwyn Aiko (EX-91) |
| 5th Dam: | Kamps-Hollow Altitude (EX-95) |
| MILK | FAT% | FAT LBS. | PRO% | PRO LBS. | SCC | NM$ | TPI |
|---|---|---|---|---|---|---|---|
| 88 | +0.04 | 15 | +0.05 | 15 | 3.08 | -110 | 2394 |
| DPR | HCR | CCR | PL | LV | M. SPEED | EFI | GFI |
|---|---|---|---|---|---|---|---|
| -3.10 | -1.60 | -3.70 | -1.30 | -1.60 | 7.05 | 7.80 | 8.70 |
| 83%R | 79%R | 82%R | 83%R | 77%R | 59%R | — | — |
| PTAT | UDC | FLC |
|---|---|---|
| -0.04 | -0.52 | 0.11 |
| SIRE CALV. EASE | DAU. CALV. EASE |
|---|---|
| 2.10 | 2.40 |
| 77%R | 69%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).