Abstract
The impact of various pricing systems on the economic values of milk traits in Czech Holstein cattle was comprehensively evaluated. Milk yield, milk components, somatic cells score (SCS) and clinical mastitis incidences were evaluated under the average production and economic conditions of the year 2015. The flexible bio-economic model of the program package ECOWEIGHT 6.0.4 was used for calculation. Under the evaluated pricing systems marginal economic values of milk components ranged from 37.92 to 253.05 € and from 126.46 to 461.71 € per % of fat and proteins per cow per year, respectively. High variability was also found for economic importance of SCS (from −14.71 to 800.94 € pre score pre cow and per year). Marginal economic values for milk yield (0.103 € per kg) and clinical mastitis (83.86 € per incidence), both per cow and per year remained without the change over all pricing systems. To standardize the marginal economic values and to calculate the actual relative economic values of traits the actual genetic standard deviations are needed.
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