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Breed means, bases and heterosis


December 2018 across breed base adjustment parameters
Breeding value (2*PTA) differences from Holstein

Breed Milk Fat Protein Productive
Life
Somatic
Cell
Score
Daughter
Pregnancy
Rate
Heifer
Conception
Rate
Cow
Conception
Rate
Livability
Ayrshire -5082 -149 -136 0.0 -0.09 2.4 -6.4 0.9 4.1
Brown Swiss -3983 -93 -74 -0.6 0.02 -0.3 -8.5 -4.4 1.1
Guernsey -5885 -91 -144 -7.8 0.25 -0.5 -10.2 -7.7 -11.0
Jersey -5416 -55 -93 2.5 0.27 6.4 -0.7 5.7 1.6
Milking Shorthorn -5379 -200 -161 -0.8 0.08 4.5 -1.4 2.8 5.5

 

PTA differences from Holstein

Breed Milk Fat Protein Productive
Life
Somatic
Cell
Score
Daughter
Pregnancy
Rate
Heifer
Conception
Rate
Cow
Conception
Rate
Livability
Ayrshire -2541 -75 -68 0.0 -0.04 1.2 -3.2 0.5 2.1
Brown Swiss -1992 -47 -37 -0.3 0.01 -0.1 -4.2 -2.2 0.6
Guernsey -2943 -45 -72 -3.9 0.13 -0.3 -5.1 -3.9 -5.5
Jersey -2708 -28 -46 1.3 0.13 3.2 -0.3 2.9 0.8
Milking Shorthorn -2689 -100 -81 -0.4 0.04 2.2 -0.7 1.4 2.7

 

Standard deviation ratio

Breed Milk Fat Protein Productive
Life
Somatic
Cell
Score
Daughter
Pregnancy
Rate
Heifer
Conception
Rate
Cow
Conception
Rate
Livability
Ayrshire 0.91 0.91 0.91 1.00 1.07 1.00 1.00 1.00 1.00
Brown Swiss 0.95 0.95 0.95 1.00 1.00 1.00 1.00 1.00 1.00
Guernsey 0.90 0.90 0.90 1.00 1.12 1.00 1.00 1.00 1.00
Holstein 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
Jersey 0.95 0.95 0.95 1.00 0.91 1.00 1.00 1.00 1.00
Milking Shorthorn 0.75 0.75 0.75 1.00 1.07 1.00 1.00 1.00 1.00

 

Trait means for base cows

Breed Milk Fat Protein Productive
Life
Somatic
Cell
Score
Daughter
Pregnancy
Rate
Heifer
Conception
Rate
Cow
Conception
Rate
Livability
Ayrshire 18565 722 586 28.5 2.43 25.8 47.5 39.9 85.2
Brown Swiss 22628 916 750 26.9 2.55 24.5 46.9 31.8 83.6
Guernsey 17476 782 570 25.8 3.01 24.0 41.3 28.5 76.5
Holstein 26994 1006 822 25.1 2.37 28.5 57.2 35.1 84.8
Jersey 19752 938 710 29.2 2.77 35.3 54.9 41.5 86.8
Milking Shorthorn 18863 696 584 27.3 2.76 29.5 56.2 40.7 89.7



Initial 1960 heterosis value

Milk Fat Protein Productive
Life
Somatic
Cell
Score
Daughter
Pregnancy
Rate
Heifer
Conception
Rate
Cow
Conception
Rate
Livability
-7 18 7 0.69 0.03 2.45 1.64 2.41 0.02



Regression per 1% inbreeding

Milk Fat Protein Productive
Life
Somatic
Cell
Score
Daughter
Pregnancy
Rate
Heifer
Conception
Rate
Cow
Conception
Rate
Livability
-63.3 -2.38 -1.88 -0.25 0.00 -0.15 -0.06 -0.18 -0.08



Base Cow Expected Future Inbreeding (EFI)

Breed EFI
Ayrshire 6.3
Brown Swiss 6.7
Guernsey 7.3
Holstein 6.1
Jersey 7.0
Milking Shorthorn 4.2