One hundred and twenty three cases of fowl cholera were diagnosed in south-west Poland over a 3-year period on geese and turkeys farms. A phenotypic analysis of 43 isolates of Pasteurella sp. was performed and all the tested isolates decomposed glucose, fructose, mannose and saccharose. Sorbitol, maltose and trehalose were fermented by 95.2%, 7.1% and 7.1% of the strains respectively. 83,7% of the isolates tested were identified as P. multocida subsp. multocida, 2.3% as Avibacterium gallinarum and 14% could not be assigned to any of the currently recognized subspecies or species of Pasteurella. The study revealed that capsular antigens belonging to group A and D occurred in 74.4% and 14.3% of the isolates, respectively. However, 16,7% of the isolates did not reveal the presence of capsular antigens. Most of the isolates (76.2%) belonged to somatic serotype 1. The study indicated that the strains were most sensitive to amoxicillin (100%), amoxicillin with clavulanic acid (100%), colistin (93%) and gentamicin (88%).
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