Conversions Interbull

Conversion factors production and conformation
The breeding value of the country of origin can only be converted to the Dutch base for Black & White sires if the Interbull breeding value of a sire is not known or if a new foreign breeding value is published. In those cases the conversion is done using the conversion factors below, which have been set by Interbull.

Conversion factors production and conformation for Holstein on Black & White basis

Country Conversion factors
USA USA
Canada Canada
Germany Germany
France France
Italy Italy
Denmark, Finland & Sweden Denmark, Finland & Sweden
Great Britain Great Britain
Ireland Ireland
New Zealand New Zealand
Australia Australia
Czech Republic Czech Republic
Japan Japan
Estonia Estonia
Spain Spain
Switzerland Switzerland
South Africa South Africa
Poland Poland
Hungary Hungary

Source: Interbull

The converted breeding values for % fat, % protein and Inet are calculated using the breeding values for kg milk, kg fat and kg protein. See Calculating breeding values for % fat and % protein per basis

Conversion foreign breeding values
Foreign breed values of sires are converted by Interbull. Interbull makes the converted breeding value available to the computer centre that publishes the sire indexes in the Netherlands and Flanders.

Currently, Interbull converts breeding values for milk production traits, conformation, life span, birth traits (birth process and vitality), somatic cell count and fertility. These conversions are done for several main groups/breeds: Holstein (Black & White and Red & White), Jersey, Brown Swiss, Simmental (including Fleckvieh and Montbeliarde), Guernsey and Red Dairy Cattle (including Ayrshire and Scandinavian Red breeds). The sire indexes for the Netherlands and Flanders are used in the conversions of Holstein, Jersey, Brown Swiss, Simmental and Red Dairy Cattle. There is not enough data from the Netherlands and Flanders available for the conversion for Guernsey.

The tables displayed below show an overview for Holstein, Jersey, Brown Swiss, Simmental and Red Dairy Cattle of the countries and trait groups for which an Interbull conversion exists.

Holstein (Black & White and Red & White)

Country Prod Conf Long CE Vit SCC Fert MS Temp
Argentina reddot
Australia reddot reddot reddot reddot reddot reddot reddot reddot reddot
Canada reddot reddot reddot reddot reddot reddot reddot reddot reddot
DFS(1) reddot reddot reddot reddot reddot reddot reddot reddot reddot
Germany(2) reddot reddot reddot reddot reddot reddot reddot reddot reddot
Estonia reddot reddot reddot
Great Britain reddot reddot reddot reddot reddot reddot reddot reddot
France reddot reddot reddot reddot reddot reddot reddot reddot reddot
Hungary reddot reddot reddot reddot reddot reddot
Ireland reddot reddot reddot reddot reddot reddot
Israel reddot reddot reddot reddot reddot reddot
Italy reddot reddot reddot reddot reddot reddot reddot
Japan reddot reddot reddot
Croatia reddot reddot
Latvia reddot reddot
Lithuania reddot reddot
The Netherlands/Flanders reddot reddot reddot reddot reddot reddot reddot reddot reddot
New Zealand reddot reddot reddot reddot reddot
Poland reddot reddot reddot reddot
Portugal reddot reddot reddot
Slovenia reddot reddot reddot reddot reddot
Slovakia reddot
Spain reddot reddot reddot reddot reddot
Czech Republic reddot reddot reddot reddot reddot
Uruguay reddot
United States reddot reddot reddot reddot reddot reddot reddot
Wallonia reddot reddot reddot reddot reddot reddot
Switzerland reddot reddot reddot reddot reddot reddot reddot reddot reddot
South Africa reddot reddot reddot reddot reddot
South Korea reddot reddot reddot

1 = Denmark, Finland and Sweden (Nordic Evaluation), 2 = including Luxemburg and Austria

Jersey

Country Prod Conf Long CE Vit SCC Fert MS Temp
Australia reddot reddot reddot reddot reddot reddot
Canada reddot reddot reddot reddot reddot reddot
DFS(1) reddot reddot (3) reddot reddot reddot reddot
Germany(2) reddot
Great Britain reddot reddot reddot reddot reddot
Ireland reddot reddot reddot
Italy reddot reddot
The Netherlands/Flanders reddot reddot reddot reddot reddot reddot
New Zealand reddot reddot reddot reddot reddot
United States reddot reddot reddot reddot reddot
South Africa reddot reddot reddot reddot reddot

1 = Denmark, Finland and Sweden (Nordic Evaluation), 2 = including Austria, 3 = only Denmark

Brown Swiss

Country Prod Conf Long CE Vit SCC Fert MS Temp
Canada reddot reddot reddot reddot reddot reddot reddot
Germany(1) reddot reddot reddot reddot reddot reddot reddot
France reddot reddot reddot reddot reddot
Great Britain reddot reddot reddot reddot reddot
Italy reddot reddot reddot reddot reddot reddot
The Netherlands/Flanders reddot reddot reddot reddot reddot reddot reddot
New Zealand reddot reddot reddot reddot
Slovenia reddot reddot reddot reddot reddot
United States reddot reddot reddot reddot reddot reddot
Switzerland reddot reddot reddot reddot reddot reddot reddot

1 = including Austria

Simmental (Fleckvieh and Montbéliarde) 

Country Prod Conf Long CE Vit SCC Fert MS Temp
Germany(1) reddot reddot
France reddot reddot reddot
Great Britain reddot reddot
Hungary reddot reddot
Ireland reddot
Italy reddot reddot
Croatia reddot reddot
The Netherlands/Flanders reddot reddot reddot
Slovenia reddot reddot reddot
Slovakia reddot reddot
Switzerland reddot reddot

1 = including Austria and Czech Republic

RDC (Red Dairy Cattle)

Country Prod Conf Long CE Vit SCC Fert MS Temp
Australia reddot reddot reddot reddot reddot reddot reddot
Canada reddot reddot reddot reddot reddot reddot reddot reddot
DFS (1) reddot reddot reddot reddot reddot reddot reddot reddot
Germany reddot reddot reddot reddot reddot reddot reddot reddot
Estonia reddot reddot
Great Britain reddot reddot reddot reddot reddot
Ireland reddot reddot
Latvia reddot reddot
Lithuania reddot reddot
The Netherlands/Flanders reddot reddot reddot reddot reddot reddot
New Zealand reddot reddot reddot reddot reddot
Norway reddot reddot reddot reddot reddot reddot reddot
United States reddot reddot reddot reddot reddot
South Africa reddot reddot reddot reddot

1 = Denmark, Finland and Sweden (Nordic Evaluation)