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Polish scale

Sire search on the Polish scale

More Genomic Breeding Values on the Polish scale

What is PF and gPF?

The PF for “Production and Functionality” is the total merit index that is used in Poland for ranking bulls according to the Polish breeding goal. As soon as genomic information is available, gPF can be computed.

What are the benefits of using gPF?

gPF is a breeding goal that aims for Production and Functionality. In 2014, weights for particular traits were changed and the breeding value for longevity was added.

How to understand gPF?

  • 95% of the bulls of the Holstein animals evaluated in Poland have breeding values between 80 and 120. This means that bulls with a proof over 120 represent the top 2.5% of the breed.
  • Breeding values on the Polish scale are standardized for an average of 100 and a genetic standard deviation of 10.

Who is responsible for estimation and publication of breeding values?

The National Research Institute of Animal Production in Kraków-Balice is responsible for the official publication of national and international breeding values.

Where do you search for the gPF of a specific sire?

gPF and all other breeding values calculated by the National Research Institute of Animal Production in Kraków-Balice are available on the official website.

Where do you find more information on Polish proofs?

http://wycena.izoo.krakow.pl/doc/methods_2015_3.pdf

gPF

gPF

gPF: 5 groups of traits

The gPF is composed of breeding values for 5 groups of traits with their respective weights:

gPF

 

Press publication

Press publication of the Polish and Interbull breeding values takes place 3 times a year on the following dates:

  • Wednesday 8th of April 2020
  • Wednesday 12th of August 2020
  • Wednesday 2nd of December 2020