Non-Parents (Spring 2026) ProS HB GM CED BW WW YW ADG DMI MILK ME HPG CEM STAY MARB YG CW REA FAT Min. -105 -85 -68 -9 -11.5 0 0 -.02 -0.90 0 -34 0 -9 0 -.58 -.80 -35 -.84 -.17 Avg. 105 53 52 13 -1.9 67 106 .25 0.72 26 3 11 13 15 .47 .05 22 .13 .01 Max. 294 154 219 29 10.2 124 203 .53 2.59 44 43 25 29 29 2.58 .47 118 2.00 .11 1% 168 99 97 22 -6.5 91 149 .38 -0.02 34 -20 17 11 21 .96 -.15 49 .61 -.03 2% 162 94 92 21 -6.0 88 145 .36 0.05 33 -18 16 11 21 .90 -.12 46 .55 -.02 3% 158 91 88 20 -5.6 87 141 .35 0.11 33 -16 16 10 20 .87 -.09 44 .51 -.02 4% 154 89 86 20 -5.4 85 139 .35 0.15 32 -15 15 10 20 .84 -.08 42 .48 -.01 5% 151 86 83 19 -5.2 84 137 .34 0.18 32 -15 15 10 20 .81 -.07 41 .45 -.01 10% 140 79 76 18 -4.5 80 130 .32 0.30 30 -11 14 9 18 .72 -.04 36 .37 -.01 15% 133 74 71 17 -3.9 77 125 .30 0.39 30 -6 14 9 18 .66 -.03 33 .32 .00 20% 127 69 67 16 -3.5 75 121 .29 0.45 29 -3 13 8 17 .61 -.01 31 .31 .00 25% 122 66 63 15 -3.2 73 118 .28 0.51 28 -1 13 8 17 .57 .00 29 .26 .00 30% 118 63 60 15 -2.9 72 115 .27 0.57 28 0 13 8 16 .54 .01 27 .23 .00 35% 114 60 58 14 -2.6 70 112 .27 0.61 27 1 12 8 16 .51 .02 26 .20 .01 40% 110 57 55 14 -2.3 69 110 .26 0.63 27 2 12 7 16 .48 .03 24 .17 .01 45% 107 55 53 13 -2.1 67 107 .25 0.65 26 3 12 7 15 .46 .04 24 .15 .01 50% 103 52 51 13 -1.8 66 105 .24 0.70 26 4 12 7 15 .43 .05 23 .12 .01 55% 100 50 49 12 -1.5 65 103 .24 0.75 25 5 11 7 14 .40 .06 21 .10 .02 60% 97 47 47 12 -1.3 64 100 .23 0.79 25 6 11 6 14 .39 .07 20 .07 .02 65% 94 44 45 11 -1.0 63 99 .22 0.84 24 6 11 6 14 .39 .08 18 .05 .02 70% 90 42 43 11 -0.8 61 96 .22 0.89 24 7 11 6 13 .37 .09 17 .02 .02 75% 87 39 40 10 -0.5 60 93 .21 0.95 23 8 10 6 13 .35 .10 15 .00 .02 80% 82 36 37 9 -0.2 58 90 .20 1.01 23 10 10 5 12 .32 .11 13 -.03 .03 85% 77 31 33 9 0.2 56 86 .19 1.09 22 11 10 5 11 .29 .12 11 -.07 .03 90% 71 26 29 7 0.8 53 82 .17 1.18 21 13 9 4 11 .25 .14 8 -.12 .04 95% 61 17 22 6 1.6 49 75 .15 1.34 19 16 9 3 9 .19 .17 3 -.19 .04
EPDs are predictions, not true values, and we can therefore expect that EPDs will change from sire evaluation, as more information (i.e. progeny data) is included. A possible change value is an estimate of the amount of change (in trait units) that can be expected for a given EPD. Technically, there is a 68% chance that the real genetic value (an EPD with a accuracy of 1.0) for any trait lies between its EPD plus its possible change value and its EPD minus its possible change value. For example, if a sire has a weaning EPD of +25 lb. and a possible change value of 10 lb., we can expect the true genetic value to be between +15 lb. (25 - 10) and +35 lb. (25 + 10) 68% of the time. We should not be surprised if his EPD in next year’s evaluation is as high as +35 or as low as +15. If next year’s EPD should happen to be slightly outside of this range, keep in mind EPD Accuracies and Possible Change
there is nearly a one-in-three chance of that happening; however, significantly larger deviations can occur. Possible change is simply another way of expressing accuracy of an EPD. High accuracy sires will have small possible changes and vice versa. Many breeders feel that possible change values complement accuracies and help them determine just how thoroughly an animal has been evaluated. The accuracy/possible change chart lists possible changes in EPDs that can be expected with different levels of accuracy for the various traits. For more information on possible change values, please see the article by Dr. Bob Hough titled “Understanding EPD Accuracies and Possible Change”. This article can be downloaded from the Red Angus Association of America website at www.redangus.org.
Accuracy
CED BW WW YW DMI
MILK ME HPG CEM STAY MARB YG CW REA FAT
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
7.8 3.0 16.3 25.7 7.0 2.7 14.7 23.1
.92 11.9 .82 10.7
3 2 2 2 2
11
7.9 7.1 6.3
7.1
.26
.20 19.3 .43 .04
10
6.4 .23
.18 17.4 .39
.04
6.2 5.4 4.7 3.9 3.1 2.3 1.6
2.4 13.0 20.6
.73
9.5
9
5.7
.21 .18 .16 .13
.16 15.4 .34 .03 .14 13.5 .30 .03
2.1
11.4 18.0 .64 8.3
8 5.5 4.9
1.8 9.8 15.5 .55
7.1 6.0 4.8 3.6
7 6 4
4.7 3.9
4.2 3.5 2.8
.12 11.6 .10 9.7
.26 .22 .17 .13 .09
.02 .02 .02 .01 .01
1.5 8.2 12.9
.46 .37 .27
1 1 1 1
1.2 0.9 0.6
6.5 10.3
3.1
.10 .08 7.7
4.9 3.3
7.7 5.1 2.6
3 2.4
2.1
.08 .06
5.8
.18 2.4
2
1.6
1.4 .05 .04 3.9
0.8 0.3
1.6
.09
1.2
0 0
1
0.8 0.7
.03
.02
1.9
.04 .00
1.0
0.0 0.0 0.0 0.0 .00 0.0
0 0.0 0.0 .00 .00 0.0 .00 .00
Beckton Stock Farm 81st Anniversary Production Sale
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