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Table 1 Effect of the optimized mating method on inbreeding coefficients (F), trait penalties (T) and sire concentration within herd (C)

From: A mating method accounting for inbreeding and multi-trait selection in dairy cattle populations

Mating method

Holstein breed

allowed: 62.9%

Normandy breed

allowed: 62.5%

 

F (%)

T

C/1000

F (%)

T

C/1000

Random

3.82

2.16

399

4.05

1.50

240

Specific

2.91

1.10

311

2.80

0.58

179

Optimized

ρ (%)

3.18

69.8

1.42

69.8

355

50.0

3.25

63.9

0.91

63.9

210

50.0

  1. ρ = relative penalty reduction