525HO117 Ja-Bob
Rex-PP-Red
aAa: 546312 | BC: A2/A2 | KC: AB
Reg: 73130038
Pedigree Analysis & Progeny Description
Rex-PP-Red…a package of profitability. This homozygous polled, red & white, 5-4-6 coded bull from the Roxy family could be described as bull who sires cookie-cutter consistency in his progeny.
Dairymen in any setup can appreciate cows with snug, shallow udders, super feet & legs, a good sloped rump and central thurl position. Rex does it consistently.
Production-wise, the Rex daughters usually are about average as young cows and generally excel in protein yield. As mature cattle, they are producing quite well.
Rex’s main weaknesses are lack of rib and reverse udder tilt. He remains an excellent mating choice for your tall, dairy, deep-ribbed, angular cows.
Rex has continued to gain points in his own right, scoring EX-92 at nearly 10 years age, with EX-93 feet & legs. With over 2,500 daughters in herds all over world, Rex is still playing an out-sized role at Triple-Hil Sires. He is the sire of three bulls in our lineup, Radix P, Great Guy P, and Heritage PP-Red.
Highlights
- Homozygous Polled!
- A2/A2, AB
- Super consistent breeding pattern
- Outcross to most of the breed (5.8 EFI, 6.9 GFI)
- 80.1 DAFS, 82.7 AAFS
- Customer Satisfaction bull!
Rex Daughter – VG-85
Rex Daughter
Rex Daughter Group
VG-85 Rex Daughter
Rex Daughter
Rex Daughter
VG-87 Rex Daughter
Rex-PP Daughter – now VG-88
GP-82 Rex-PP Daughter
Rex Daughter (Grade)
Rex Daughter
Rex Daughter Group
1st and 2nd Lactation
| Sire: | Hahncrest Appl Jax-P-Red-ET |
|---|---|
| Dam: | Golden-Oaks Dura Rae-P-Red (VG-88 4yr) |
| 2nd Dam: | Golden-Oaks Vce Rael-Red-ET (VG-87 4yr) |
| 3rd Dam: | Golden-Oaks Perk-Rae-ET (EX-90 5yr) |
| 4th Dam: | Scientific Beauty Rae-ET (EX-90 4yr) |
| 5th Dam: | Scientific Jubilant Rae-ET (EX-90 6yr) |
| 6th Dam: | C Hanoverhill Tony Rae (EX-96 3E) |
| 7th Dam: | C Hanoverhill TT Roxette-ET (EX-94 2E) |
| 8th Dam: | Mil-R-Mor Roxette (EX-90 7yr) |
| 9th Dam: | C Glenridge Citation Roxy (EX-97 4E) |
| 10th Dam: | C Norton Court Model Vee (EX-90 13yr) |
| MILK | FAT% | FAT LBS. | PRO% | PRO LBS. | M. SPEED | NMS | TPI |
|---|---|---|---|---|---|---|---|
| -1,479 | -0.11% | -88 | 0.05% | -37 | 6.9 | -612 | 1,857 |
| MILK | FAT% | FAT LBS. | PRO% |
|---|---|---|---|
| -1,479 | -0.11% | -88 | 0.05% |
| PRO LBS. | M. SPEED | NMS | TPI |
|---|---|---|---|
| -37 | 6.9 | -612 | 1,857 |
| SCS | DPR | CCR | HCR | PL | LV |
|---|---|---|---|---|---|
| 3.03 | 0.7 | -0.1 | 0.0 | 0.1 | 1.7 |
| — | 97%R | 97%R | 91%R | 97%R | 89%R |
| SCS | DPR | CCR |
|---|---|---|
| 3.03 | 0.7 | -0.1 |
| — | 97%R | 97%R |
| HCR | PL | LV |
|---|---|---|
| 0.0 | 0.1 | 1.7 |
| 91%R | 97%R | 89%R |
| PTAT | UDC | FLC |
|---|---|---|
| -1.12 | -0.13 | 0.10 |
| SIRE CALV. EASE | DAU. CALV. EASE |
|---|---|
| 1.7 | 3.0 |
| 98%R | 96%R |
comparable PTAT bulls
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).