THE OCCURRENCE OF INFECTIOUS AND PARASITIC DISEASES IN POULTRY SLAUGHTERED IN THE DISTRICT OF OLSZTYN, POLAND, 1986-91

During 6 years, 1986-91, in poultry processing plants in the district of Olsztyn, Poland, 37,779,959 carcasses and internal organs of slaugh tered fattened poultry were (1,691,188 hens, 23,681,855 chickens, and 12,226,016 turkeys) were examined. As a result of the antemortem and p ostmortem inspections, 744,499 birds were condemned for human consumpt ion, which was 1.66% of the total number of birds examined. The highes t percentage of condemned birds was registered in hens (2.4%) and the lowest in chickens (1.27%). By means of a medical examination, the fol lowing diseases were diagnosed most frequently in chickens: Marek's di sease in 2,265 birds (0.095%), salmonellosis in 13,463 birds (0.056%), coccidiosis in 9,548 birds (0.04%), and chronic illness of the respir atory system in 377 birds (0.0016%). In hens, salmonellosis was found in 15,951 birds (0.94%), tuberculosis in 301 birds (0.018%), leukemia in 122 birds (0.007%), and aspergillosis in 71 birds (0.0042%). Tn tur keys, chronic illness of the respiratory system was found in 23,938 bi rds (0.196%), aspergillosis in 13,243 birds (0.11%), salmonellosis in 3,918 birds (0.032%), and leukemia in 29 birds (0.00024%).