Page 83 - NZ Herefords Magazine 2019 Edition

KEY FOR FIGURE 2 No genomics
Single-Step Breedplan

1400

1200

1000

Number of Animals 800

600

400

200

<-25 -25<-15 -15<-5 -5<5 5<15 15<25 25<-35 35<45 45<55 55<65 65<75 75<85 85<95 95<105 105<115 115<125 125<135 135<145
600 Day Weight EBV

FIGURE 2. Variation for 600 day weight EBVs in young, non-parent animals with genotypes where A. no genomic information is included in the
analysis, and B. genomic information is included.

3) EBV accuracy has changed was no genomic data have an accuracy of between 37-59% when
The inclusion of genomic data in the Single-Step BREEDPLAN genomic information is included. In contrast, animals that started
analysis has resulted in increases in EBV accuracy. Figure 3 shows with an accuracy of 90% increased, at most, to 91% accuracy under
the increase in 200 day weight EBV accuracy for genotyped Single-Step BREEDPLAN. While there have been some large
animals when genomic information is included in the analysis. increases in EBV accuracy for 200 day weight, these increases
The increase in accuracy is not uniform across all animals; larger in accuracy are not uniform across traits. For example, there
increases in accuracy are seen for those animals that had lower are much smaller increases in EBV accuracy for traits such as
accuracies when genomic data was not included. For example, days to calving.
animals that started with an accuracy of less than 20% when there

200 DAY WEIGHT

120
EBV Accuracy - Single-Step BREEDPLAN 80
100

60

40

20

0
0 10 20 30 40 50 60 70 80 90 100
EBV Accuracy - No genomics

FIGURE 3. The 200 day weight EBV accuracy of animals with genotypes when no genomic information is included, and under Single-Step BREEDPLAN.

81