Economic weights of Holstein cattle in Slovak dairy production system

This work presented economic weights (EWs) calculated for Holstein cattle raised in Slovak dairy productions using a bio-economic approach. EWs are calculated for alternatives with (A) and without (B) market quota. Both alternatives included three market payment systems of milk (base price per milk value was corrected according to content of fat, protein and somatic cells). Marginal EWs for milk production traits and for some functional traits were influenced by quotas system. Mainly values for fat content got different weight (-103.8 EUR/% per cow and year and -21.9 EUR/% per cow and year in system A and B, respectively). EWs for all growth and carcass traits were in both systems similar. Values for fat and protein content were also influenced by payment system. Standardised EWs for lifetime of cows and daily gain of calves during rearing and feedlot in system A shared 20 %, 20 % and 18 % of the value for milk yield. In system B values reached 18 %, 14 % and 13 % of the standardised milk value. Relative EWs for milk fat content shared about –31 % and –4% for system A and B.