Antimicrobial susceptibility test results of Salmonella Gallinarum (n = 197) isolated from the non-vaccinated layer flocks. A total of 13 antimicrobial agents under seven groups of antimicrobials were used at standard doses (μg): Amoxycillin (10 µg), Azithromycin (15 µg), Sulfamethoxazole (25 µg), Fosfomycin (50 µg), Oxytetracycline (30 µg), Doxycycline (25 µg), Levofloxacin (5 µg), Norfloxacin (10 µg), Ciprofloxacin (5 µg), Enrofloxacin (5µg), Neomycin (30 µg), Amikacin (30 µg), and Gentamicin (10 μg). Three categories (susceptible, intermediate, and resistant) of the resistant pattern in accordance to Clinical and Laboratory Standards Institute (CLSI) [42] were estimated.