Due to the significance of Staphylococcus strains in bird infections, analysed was the frequency of occurrence of Staphylococci in different farming materials of the broiler house. Out of 1 294 samples taken from selected elements of the farming environment, presence of Staphylococcus strains was detected in 365 (28.2%), whereas in the biological materials – 106, which makes up 22.5% of these bacteria. As regards Staphylococcus strains, the following were isolated in the farming materials – in the air: S. xylosus – 40.0%, S. lentus – 22.7%, S. aureus – 12.0%, S. saprophyticus – 6.7%, S. epidermidis, S. hominis – 4.0%, S. caprae, S. haemolyticus, S. schleiferi – 1.3% and Staphylococcus spp. – 6.7%; floor surface: S. xylosus – 39.1%, S. lentus – 30.0%, S. aureus – 10.0%, S. sciuri – 4.5%, S. capitis, S. gallinarum – 2.7%, S. cohnii, S. hominis, S. schleiferi – 1.8%, S. epidermidis – 0.9%; wall surface: S. xylosus – 30.6%, S. lentus – 23.9%, S. aureus – 9.4%, S. epidermidis – 4.4%, S. saprophyticus – 3.9%, S. capitis – 3.3%, S. caprae, S. gallinarum, S. haemolyticus, S. hominis, S. schleiferi – 2.8%, S. sciuri – 2.2%, S. cohnii – 1.7% and Staphylococcus spp. – 6.7% ; in biology different materials: S. xylosus – 54.7%, S. lentus – 20.7%, S. aureus – 15.1% and S. epidermidis – 9.4%; in parenchymal organs: S. xylosus – 33.3%, S. lentus – 17.4%, S. epidermidis – 7.3%, S. capitis, S. saprophyticus, S. sciuri – 4.4%, S. gallinarum, S. haemolyticus – 2.9%, S. aureus, S. caprae, S. cohnii – 1.5% and Staphylococcus undefined species. – 15.9%.

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