The aim of this paper was to describe technological processes in intensive fattening of chickens, touch on the most important technological and microclimatic factors in production, and describe new technologies used in production, their impact on improving quality and economy of production, and the impact of enriched environment on welfare and health chickens. Feeding and watering systems must provide chickens with sufficient food and water needed for fast and quality fattening, and the breeding facility, heating, ventilation and lighting systems should create favorable microclimatic conditions to keep chickens comfortable, with preserved health and well-being and the ability to display maximal genetic potential without incidence of too much disease and injury. New technologies provide us with better control over all microclimatic parameters, litter quality and the behavior of the animals themselves, which directly benefits us in controlling and continuously improving the production process, especially in health control, where prompt response can prevent the development of a number of problems and reduce the need for treatment.