EFFECTS OF DIETARY AFLATOXIN Bl ON QUAILS AND ITS IMMUNIZATION AGAINST FOWL CHOLERA COLIBACILLOSIS IN QUAILS AND TRIALS FOR VACCINATION SOME STUDIES ON THE PREVALENCE RATES OF SALMONELLA MICROORGANISMS IN POULTRY OPERATION SYSTEM IN KINGDOM OF SAUDIA ARABIA (KSA) some studies on the prevalence rate of Salmonella microorganisms in poultry operation system in kingdom of saudia Arabia(KSA). Alexandria J.VET.SCIENCE.21:186-197. Seroprevalence of H9N2 subtype avian influenza in chicken farms in Saudia Arabia.Kafr El-Sheikh vet.Med.J.4:73-83 The acaricidal efficacy of aqueous neem extract and ivermectin against Sarcoptes scabiei var. cuniculi in experimentally infested rabbits