The paper presents analysis of influence of total agriculture progress on changes of unit costs in broiler chicken production in 1994-2015. Results of annual assessment of utility value of broiler chicken in Poland were taken as a measure of total progress in production. This assessment was carried out by Central Animal Breeding Office (1994-2000), National Centre of Animal Breeding (2001-2003), and National Poultry Council (2004-2015). All analysed indices improved between 1994 and 2015 as followes: feed conversion ratio from 2.52 to 1.66 kg/kg, daily mass increment from38.1 to 60.0 g/day, mortality from 9% to 4.3%. In 1994-2015, unit costs of broiler production (expressed in constant prices of 1994) decreased by 36%. Up to 2003, decrease in costs was on average 2.5% yearly and since 2004 the decrease was on average 1% yearly. The strongest influence on lowering broiler chickens production costs (22%) was exerted by the decrease in feed costs due to improvement of feed conversion ratio, decrease in other costs (9%) and the purchase amount of material for breeding and costs of purchase of one-day chicks (5%).