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The aim of this study was to evaluate the influence of floor quality on the behaviour and cleanliness of the diary cow‘s body. The analysis results show that cows housed in the section with the separated manure solids spent more time lying (41.47%) and also laid less in the corridor manure (0.91%) than the cows in the section with separated manure solids and the rubber mats where they were laying generally less (35.71%), they spent more time lying in the corridor manure (1.55%) and in terms of preference of lying area the cows clearly preferred the separated manure solids (25.8%). Based on observations we can say that cows housed in sections of slurry solid phase were cleaner (average 6.13 points) than cows in the section with the rubber and a separated manure (averagely 7.28 points). Nowadays the free housing systems with different types of litter and boxes are frequently used, while the proper littering influences the lying preferences of an animal. In practice, for the dairy cows the deepened lying boxes littered with natural materials such as sawdust, shavings, straw, dried manure and sand boxes or elevated boxes covered with a synthetic material, mattresses or mats are used. Cieľom práce bolo zhodnotiť vplyv kvality podlahy na správanie a čistotu povrchu tela dojníc. Z analýzy výsledkov vyplýva, že dojnice ustajnené v sekcii so separovaným kalom hnojovice venovali ležaniu väčšiu časť (41,47%) a ležali aj menej v hnojnej chodbe (0,91%) ako dojnice v sekcii so separovaným kalom hnojovice aj gumenými matracmi, kde dojnice celkovo menej ležali (35,71%), viac času ležali v hnojnej chodbe (1,55%) a z hľadiska uprednostňovania ležoviska ležali jednoznačne viac na separovanom kale hnojovice (25,8%). Na základe pozorovaní možno povedať, že dojnice ustajnené v sekciách so separovaným kalom hnojovice boli čistejšie (priemerne 6,13 bodov) ako dojnice v sekcii so separovaným kalom hnojovice aj gumou (priemerne 7,28 bodov). V súčasnosti sa využívajú voľné systémy ustajnenia s rôznymi typmi podstielok a boxov, pričom samotné podstielky ovplyvňujú dobu ležania. V praxi sa pre dojnice používajú prehĺbené ležiskové boxy podstielané prírodným materiálom ako napr. piliny, hobliny, slama, sušený maštalný hnoj, či piesok alebo vyvýšené boxy pokryté syntetickými materiálmi - matrace, rohože

THE INFLUENCE OF FLOOR QUALITY ON DAIRY COW BEHAVIOUR AND THEIR BODY CLEANLINESS