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The economic weights (EW) of 13 production and function traits for Charolais cattle raised in Slovakia were calculated. Two different fattening systems – intensive feedlot in bind (Type1) and in free technology (Type2) and two different slaughter weights – 550 kg (A) and 650 kg (B) were simulated. EWs for current production system (2006) and for the future production system (2010) were calculated. The economic weights were expressed in Slovak crowns (1 Euro = 33.35 Sk). The lowest total and nutrition costs were obtained for fattening of heifers in Type1B. The economic importance of evaluated traits were little bit higher in all feedlots types for production system in 2010 year, except EW for average daily gain during fattening period. The EW for average daily gain during fattening period were +4.66 ,+7.61, +4.74 ,+7.68 Sk per 1 g for Fed1A, Fed1B, Fed2A, Fed2B in 2006 year, respectively. The highest differences in EW within one trait for different alternatives were found out for EW of conception rate of cows and average daily gain in fattening for 2006 and 2010, respectively. The different influence of feedlot types on EW were observed mainly for functional traits and average daily gain during fattening period.