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|
Trait
|
Index coefficient
|
Genetic SD
|
Fraction of the indexa
|
|---|
|
Milk (kg)
|
0
|
910
|
0.000
|
|
Fat (kg)
|
8.48
|
32.1
|
0.212
|
|
Protein (kg)
|
21.2
|
22.6
|
0.373
|
|
Somatic cell score
|
− 300
|
0.47
|
0.110
|
|
Fertility (%)
|
26
|
7.15
|
0.145
|
|
Persistency (%)
|
10
|
5.44
|
0.042
|
|
Herd-life (days)
|
0.6
|
205
|
0.096
|
|
Maternal calving difficulty (%)
|
− 3
|
5.46
|
0.013
|
|
Maternal stillbirth (%)
|
− 6
|
2.21
|
0.010
|
- SD standard deviation
- aComputed as the product of the absolute value of index coefficient and the genetic SD for each trait, divided the sum of the index contributions for all traits
