| A new and powerful tool was added to the Fall 1996 National
Carcass Evaluation called Percent Retail Product. It is a predictor of the difference in
pounds of saleable retail product of a given sires' progeny compared to the average sire
in the Angus breed. I. In using Percent Retail Product
EPD, let's make the following assumptions:
- Two sires are used with the following EPDs for Percent Retail
Product.
| Name |
%RP EPD |
| Richard |
+.5 |
| Henry |
-.5 |
- Each sire is randomly mated to 100 cows.
- All calves are treated alike until slaughter time.
- Breed average hot carcass weight is approximately 740 pounds.
- Breed average Percent Retail Product is 62.6%.
- Average price/pound of retail product is $3.00.
- Carcass data is gathered, processed and adjusted to 480 days of
age.
II. Solution and Implication
If other things are equal and there is an EPD difference of 1%
for Percent Retail Product between the two bulls, then we observe the following:
- Richard's progeny has an average Percent Retail Product of 63.1%.
- Henry's progeny has an average Percent Retail Product of 62.1%.
- Richard
740#HCW x 63.1%RP x $3.00/lb x 100 calves = $140,082Henry
740#HCW x 62.1%RP x $3.00/lb x 100 calves = $137,862
- Difference in value = $2,220*
*about the price of one good registered bull
John Crouch, director, performance programs |
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