EBV for milk, F, P, SCS, persistency

Since May 2005, breeding values for milk, fat, protein and somatic cell score have been jointly estimated using a so-called Multiple Trait Random Regression Test Day Model. Milk samples from all lactations are included in the evaluation. The model takes into account the cows’ individual lactation pattern, thus also providing an EBV for persistency for both cows and sires. Breeding values for fat and protein content are calculated at a second stage based on the breeding values of yield traits. Since July 2007 breeding values for somatic cell scores have been published for cows as well (previously only for sires).