In Vitro studies on antimicrobial activity of Allium Sativum against bacterial and fungal pathogens of animal health importance

The crude alcoholic and aqueous extracts of bulb and leaves of Allium sativum (garlic) were studied in vitro for their antimicrobial activity against the bacteria (Salmonella Gallinarum , Pasteurella multocida, Streptococcus zooepidemicus, Escherichia coli and Staphylococcus aureus) and fungus (Aspergillus fumigatus) of animal health importance. The alcoholic extract of clove of garlic possessed antimicrobial activity against all above mentioned bacteria except Pasteurella multocida with greater diameter of inhibition zone (range- 21.00±2.00 to 24.33±2.08 mm) and less minimum inhibitory concentration as compared to its corresponding aqueous extract. The alcoholic extract of garlic leaf was also found to possess antibacterial activity against Streptococcus zooepidemicus and Escherichia coli. However, its aqueous extract showed no antimicrobial activity at all. The growth of Aspergillus fumigatus was inhibited by the alcoholic extracts of garlic bulb as well as leaf while their corresponding aqueous extracts showed no antifungal activity.