Histopathologic and Bacteriologic study on broiler condemned livers in Rafsanjan industerial poultry slaughterhouse

Condemnation of diseased livers in broiler slaughterhouses has economic importance. Pathologic and bacteriologic studies could be resulted in Rafsanjan industrial poultry slaughterhouse. In this period 50% of liver were condemned. Based on the macroscopic features, diseased livers with yellow discoloration (42%). Bacteriologic examinations resulted in isolation of E.coli (9.14%) from group 1. The result of serotyping of 132 isolates were as follow: 47.73% untypable isolates, 6.06% rough strains, 33.34% O78, 503% O2, 2.27% O86, 0.75% O111 and 4.55% O1. Histopathologic studies revealed 3 differen group of diseased livers. First, congested livers (30%), second, congested livers with hepatitis (28%) and third, livers with fatty change (42%). These result showed the Importance of E.coli in economic loss and public health hazards.