n connection with the growing trend of using slow-growing genotypes or dual cockerels for reasons of animal husbandry ethics, welfare and higher meat maturity, for the purposes of meat production, it is necessary to deal with testing and determine the combination effect of genotype and housing system on chicken performance and meat quality. Therefore, an experiment was realized, the aim of which was to evaluate meat quality indicators in three cockerel genotypes differing in growth rate and housing system. The higher intake of pasture vegetation in slow-growing compared to fast-growing cockerels was reflected mainly in the fatty acid profile and lutein content in meat than in the content of fat-soluble vitamins in meat, where the intake of cereal diet also played a role. Conventionally fattened slow-growing ISA Dual cockerels were unable to utilize vitamin E from cereal mixed feed to increase the oxidative stability of fat in meat compared to medium and fast-growing genotypes. The ISA Dual genotype is suitable for pasture fattening, as it showed the highest willingness to graze and the higher intake of pasture vegetation had a positive effect on the quality of the meat in terms of the content of health-promoting substances, especially lutein and polyunsaturated fatty acids. In addition, the meat of these cockerels showed a higher oxidative stability of fats. However, the use of the ISA Dual genotype for meat production may be negatively affected by lower productivity and poorer sensory evaluation of the meat of cockerels fattened on pasture. If we allow ISA Dual cockerels to be fattened on pasture, we will obtain a quality product – meat, which can be considered a functional food intended for specialized markets. It therefore seems that fattening dual cockerels on pasture is more advantageous than culling them immediately after hatching.