525HO48 Big
Redstar
aAa: 543162 | BC: A1/A2 | KC: BB
93% Reg: 760577404 | DOB: 03/01/2018
- Well-devoloped bull with an impressive pedigree
- Dam is a Malki daughter, backed by 7 gen VG or EX
- Sire is known for transmitting great confirmation
- Transmitting wide-rumped, strong front-ended cows
- Great production
Big Super Star 146 (EX-91)
4-08 305d 35,574 3.9 1373 3.9* 1373*
LIFE: 170,372 3.8 6440 3.8 6389
Sired by: Big Malki
Redstar Daughter Group
Redstar Daughter
Redstar Daughter
Big Super Star 146 (EX-91)
4-08 305d 35,574 3.9 1373 3.9* 1373*
LIFE: 170,372 3.8 6440 3.8 6389
Sired by: Big Malki
| Sire: | Delta Colorado |
|---|---|
| Dam: | Big Super Star 146 (EX-91) |
| 2nd Dam: | Big Super Star 79 (VG-88) |
| 3rd Dam: | Super Star 32 (VG-85) |
| 4th Dam: | Super Star 25 (EX-90) |
| Next 4 Dams: | EX-90, VG-89, EX-90, VG-86 |
| MILK | FAT% | FAT LBS. | PRO% | PRO LBS. | M. SPEED | NMS | TPI |
|---|---|---|---|---|---|---|---|
| -732 | -0.10% | -57 | 0.08% | -4 | 6.8 | -572 | 2,095 |
| MILK | FAT% | FAT LBS. | PRO% |
|---|---|---|---|
| -732 | -0.10% | -57 | 0.08% |
| PRO LBS. | M. SPEED | NMS | TPI |
|---|---|---|---|
| -4 | 6.8 | -572 | 2,095 |
| SCS | DPR | CCR | HCR | PL | LV |
|---|---|---|---|---|---|
| 3.19 | -0.2 | -1.7 | -4.4 | -3.1 | 1.8 |
| — | 72%R | 68%R | 69%R | 81%R | 21%R |
| SCS | DPR | CCR |
|---|---|---|
| 3.19 | -0.2 | -1.7 |
| — | 72%R | 68%R |
| HCR | PL | LV |
|---|---|---|
| -4.4 | -3.1 | 1.8 |
| 69%R | 81%R | 21%R |
| PTAT | UDC | FLC |
|---|---|---|
| 0.21 | -0.12 | 0.29 |
| SIRE CALV. EASE | DAU. CALV. EASE |
|---|---|
| 1.5 | 2.0 |
| 78%R | 66%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).