الفهرس 
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Abstract
The aims of the present study are :
1-Trial for isolation of different serovars Pasteurella from ducks in Kfr El-Sheikh province.
2-Trials for bacteriological, biochemical and serological identification of the isolated microorganisms.
3-Study the in-vitro sensitivity of the isolated strains to different antibacterial agents.
4-Study the pathogenicity of the isolated strains of Pasteurella to ducks.
5-Trials for control the experimental infections induced by the isolated Pasteurella by using certain chemotherapeutic and antibacterial agents.