Non-Parents (Spring 2025) ProS HB GM CED BW WW YW ADG DMI MILK ME HPG CEM STAY MARB YG CW REA FAT Min. -109 -94 -84 -2 -11.2 0 0 -.06 -1.01 0 -36 -1 -7 0 -.52 -.78 -36 -.77 -.18 Avg. 106 53 52 13 -1.8 65 104 .24 0.73 26 2 12 7 15 .45 .05 24 .16 .02 Max. 278 151 208 26 10.0 124 204 .50 2.76 43 39 23 16 27 2.10 .47 121 1.82 .13 1% 163 96 96 19 -6.4 89 146 .37 -0.01 34 -20 17 11 21 .93 -.15 49 .63 -.03 2% 157 92 91 18 -5.9 86 141 .35 0.07 33 -18 16 11 20 .88 -.11 46 .57 -.02 3% 153 89 88 18 -5.6 84 138 .34 0.12 33 -17 16 11 20 .85 -.09 44 .52 -.01 4% 150 86 85 18 -5.3 83 135 .34 0.17 32 -16 16 10 19 .82 -.07 42 .49 -.01 5% 147 84 83 17 -5.1 82 134 .33 0.20 32 -15 15 10 19 .79 -.06 41 .47 -.01 10% 138 77 76 16 -4.4 78 127 .31 0.32 31 -11 15 9 18 .70 -.04 37 .39 .00 15% 131 72 71 16 -3.9 75 122 .30 0.40 30 -7 14 9 17 .64 -.02 34 .36 .00 20% 126 69 67 15 -3.5 73 119 .29 0.46 29 -4 13 9 17 .59 .00 32 .33 .00 25% 122 66 63 15 -3.1 72 116 .28 0.51 28 -2 13 8 17 .55 .01 30 .29 .00 30% 118 63 60 14 -2.8 70 113 .27 0.56 28 0 13 8 16 .52 .02 28 .25 .01 35% 115 61 57 14 -2.6 69 111 .26 0.60 27 1 12 8 16 .49 .03 27 .22 .01 40% 111 58 55 13 -2.3 67 108 .26 0.65 27 2 12 8 15 .46 .04 27 .20 .01 45% 108 56 53 13 -2.0 66 106 .25 0.69 26 3 12 7 15 .44 .05 25 .17 .02 50% 105 53 51 13 -1.8 65 104 .24 0.72 26 4 12 7 15 .41 .06 24 .15 .02 55% 101 51 49 12 -1.5 64 102 .23 0.76 25 5 11 7 14 .39 .07 23 .13 .02 60% 98 48 47 12 -1.3 63 100 .23 0.80 25 5 11 7 14 .38 .08 21 .10 .02 65% 95 46 45 12 -1.0 62 97 .22 0.84 24 6 11 6 14 .36 .09 20 .08 .02 70% 91 43 42 11 -0.8 60 95 .21 0.89 24 7 11 6 13 .35 .10 18 .05 .03 75% 87 40 39 11 -0.5 59 92 .21 0.94 23 8 10 6 13 .33 .11 17 .03 .03 80% 84 37 36 10 -0.1 57 89 .20 1.00 22 9 10 6 12 .30 .12 15 .00 .03 85% 79 33 33 10 0.3 55 85 .18 1.07 22 10 10 5 11 .27 .13 12 -.04 .04 90% 73 29 29 9 0.8 52 81 .17 1.17 21 12 9 5 11 .23 .15 10 -.09 .04 95% 64 21 22 8 1.6 48 74 .15 1.31 19 15 9 4 9 .17 .18 5 -.16 .05
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 Fall Production Sale
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