Stabling influence on the performance parameters of laying hens

The aim of the thesis was comparing production parameters of laying hens breeding in different housing systems at a production enterprise, it means in enriched cages and aviary. There is used the laying hybrid ISA Brown for production consumer eggs. The achievement during 13months' cycle shown that in each laying month except 1st laying month the higher hen-day egg production was fond out by hens in enriched cages. The hen-egg production per month was higher in enriched cages too. The higher mortality was demonstrated by hens in aviary during all laying months. Both housing systems reached the highest mortality in the 13th laying month. The hens in aviary had higher feed consumption per egg during all months. Higher daily feed consumption was assigned by the hens in the aviary in the 1st, 2nd and 3rd month and from the 9th to the 13th laying month. In other laying months the hens in enriched cages had higher daily feed consumption. Feed costs formed the highest entry of total costs