الفهرس 
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Abstract
Integrated Water fowls are common in Kafr El-Sheikh Governorate so the infection with many bacterial and /or viral diseases due to using poultry litter as a fertilizer in fish farms is true. In the present study 50 litter samples, 69 fish pond water samples, 200 fecal swabs from integrated water fowls and 60 samples from water fowls liver were collected for surveying some pathogens which may be present in litter and transported to fish pond and infect water fowls. Results of this survey revealed the isolation of 19 salmonella spp. Belong to 14 serotypes (4 isolates from litter,2 isolates from fish pond water, 8 isolates from fecal swabs of waterfowl and 5 isolates from waterfowl liver),17 Staphylococcus spp. (7 isolates from litter, 3 isolates from fish pond water, 5 isolates from fecal swabs of water fowls and 2 isolates from water fowls liver); and 59 pathogenic E.Coli isolates (9 isolates from litter,16 isolates from fish pond water, 22 isolates from fecal swabs of water fowls and 12 isolates from water fowls liver) isolates were obtained from different samples. Experimental infection with five chosen salmonella serotypes revealed clinico-pathological finding in different organs also mortality, feed conversion were recorded.