الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Avian colibacillosis is considered one of the main causes of morbidity and mortality. It associated with heavy economic losses to the poultry industry due to its association with various disease conditions. It causes a variety of disease manifestations in poultry.
Ciprofloxacin is one of fluoroquinolones. It is used for prophylaxis and treatment of respiratory, renal and digestive infections of poultry.
Antibiotic residues in poultry product and the resistance of microbial populations are the outcome of excessive antibiotic uses in poultry.
To replace antibiotics, new ways are used for prevention and control of infections which can modulate the gut microflora. These are non antibiotic compounds with bacteriostatic or bactericidal activity as probiotics, prebiotics and symbiotic.
The current study was designed to compare the impact of administration of ciprofloxacin, probiotic, prebiotic and symbiotic on E.coli experimentally infected chickens with special reference to their effect on growth performance, hematology and immunity.