525HO127 Dun-Did
Ice Cloud
aAa: 216345 | BC: A1/A1 | KC: AA
Reg: 144053850 | DOB: 06/04/2016
Pedigree Analysis
Here’s Ice Cloud, another truly phenomenal bull from Dun-Did breeding. Ice Cloud is a rare son of Browndale Black Ice, a Canadian bull who has consistently stamped out functional, high-scoring cattle.
Ice Cloud’s dam is a true example of the type of cow we are striving to breed. This Storm Cloud daughter lived to be 15 years old and surpassed 300,000 lb. of lifetime milk production.
Her dam was an EX-94 3E Stardust daughter and then the famous “Senator Reba” cow that graced the colored shavings at Expo in 1994. Reba had many other accomplishments: nominated All-American and All-Canadian, given 3 superior production awards in Canada, and was dam of 6 EX and 5 VG offspring.
With another year and more daughters calving in we will be able to get a better idea how this bull breeds. So far the milking Ice Cloud daughters have strong, wide front ends, lots of rib and plenty of bone.
| Sire: | Browndale Black Ice |
|---|---|
| Dam: | Dun-Did Cloudy Ria-ET (EX-94 4E) |
| 2nd Dam: | Dun-Did Strdst Rebeca-ET (EX-94 3E) |
| 3rd Dam: | Dun-Did Senator Reba (EX-93 5yr) |
| 4th Dam: | C Longlayne Admiral Robby (EX-92 2E) |
| 5th Dam: | Longlayne Baronet Robin (VG CAN) |
| 6th Dam: | PFB-BET-AL Hilltop Ivanhoe (VG-88 12yr) |
| MILK | FAT% | FAT LBS. | PRO% | PRO LBS. | M. SPEED | NMS | TPI |
|---|---|---|---|---|---|---|---|
| -2,496 | 0.06% | -88 | -0.03% | -88 | 6.7 | -1,084 | 1,331 |
| MILK | FAT% | FAT LBS. | PRO% |
|---|---|---|---|
| -2,496 | 0.06% | -88 | -0.03% |
| PRO LBS. | M. SPEED | NMS | TPI |
|---|---|---|---|
| -88 | 6.7 | -1,084 | 1,331 |
| SCS | DPR | CCR | HCR | PL | LV |
|---|---|---|---|---|---|
| 3.25 | 3.7 | 2.3 | -2.6 | -1.6 | 1.6 |
| — | 84%R | 84%R | 75%R | 86%R | 75%R |
| SCS | DPR | CCR |
|---|---|---|
| 3.25 | 3.7 | 2.3 |
| — | 84%R | 84%R |
| HCR | PL | LV |
|---|---|---|
| -2.6 | -1.6 | 1.6 |
| 75%R | 86%R | 75%R |
| PTAT | UDC | FLC |
|---|---|---|
| -1.30 | -2.71 | -0.31 |
| SIRE CALV. EASE | DAU. CALV. EASE |
|---|---|
| 3.3 | 3.5 |
| 81%R | 75%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).







