Beltsville \ BARC Animal & Natural Resources Animal Improvement Programs

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Comparison of January 2010 genomic and traditional evaluations
for bulls with an AI status of active or foreign

569 Holstein active bulls

Trait PTA Reliability (%)
Genomic
average
Traditional
average
Difference1 Standard deviation Genomic
average
Traditional
average
Difference1
Net merit ($) 240 241 -1 58 86 81 +5
Milk (pounds) 604 618 -14 165 93 91 +2
Fat (pounds) 26.5 27.2 -0.7 6.2 93 91 +2
Protein (pounds) 19.5 19.9 -0.4 4.4 93 91 +2
Productive life (months) 1.3 1.3 +0.0 0.8 80 72 +8
Somatic cell score 2.89 2.89 +0.00 0.06 88 83 +4
Daughter pregnancy rate (%) -0.2 -0.2 +0.0 0.6 77 67 +10
Final score 1.11 1.11 +0.00 0.24 89 86 +3
Sire calving ease 7.6 7.6 +0.0 0.6 90 85 +5
Daughter calving ease 7.9 7.9 +0.0 0.7 80 69 +11

  1Genomic minus traditional.