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Comparison of December 2008 genomic and traditional evaluations
for bulls with an AI status of active or foreign


546 Holstein bulls

Trait PTA Reliability (%)
Average Difference1
Genomic Traditional Average Standard deviation Genomic average Traditional average Difference1
Net merit ($) 300 309 −9 55 88 84 +4
Milk (pounds) 948 972 −24 183 93 91 +2
Fat (pounds) 35.6 36.4 −0.7 6.7 93 91 +2
Protein (pounds) 27.7 28.2 −0.5 4.9 93 91 +2
Productive life (months) 1.6 1.7 −0.1 0.9 80 71 +9
Somatic cell score 2.93 2.93 0.00 0.07 88 82 +6
Daughter pregnancy rate (%) −0.3 −0.3 0.0 0.6 79 70 +9
Final score 1.83 1.86 −0.03 0.22 90 87 +3
Sire calving ease 7.9 7.9 0.0 0.6 89 84 +5
Daughter calving ease 7.2 7.2 0.0 0.7 79 68 +11
   1Genomic minus traditional.


126 Jersey bulls

Trait PTA Reliability (%)
Average Difference1
Genomic Traditional Average Standard deviation Genomic average Traditional average Difference1
Net merit ($) 278 286 −8 40 83 78 +5
Milk (pounds) 780 821 −41 116 89 86 +3
Fat (pounds) 41.6 43.1 −1.5 4.9 89 86 +3
Protein (pounds) 28.2 29.3 −1.1 3.3 89 86 +3
Productive life (months) 1.7 1.7 0.0 0.7 71 63 +8
Somatic cell score 2.97 2.97 0.00 0.04 81 75 +6
Daughter pregnancy rate (%) −0.4 −0.5 +0.1 0.3 70 61 +9
Final score 1.21 1.23 −0.02 0.19 79 73 +6
   1Genomic minus traditional.

Last Modified: 01/12/2017