In Vitro and In Vivo Antimicrobial Activity of two Essential Oils Thymus Vulgaris and Lavandula Angustifolia against Bovine Staphylococcus and Streptococcus Mastitis Pathogen
This work was conducted in order to investigate the antimicrobial activities of essential oils of Thymus vulgaris and Lavandula angustifolia as alternatives for antibiotics against bovine staphylococcus and streptococcus mastitis pathogen. In four farms, milking cows were examined weekly for 5 months for the presence of clinical mastitis using California Mastitis Test (CMT) Meanwhile essential oils of Thymus vulgaris and Lavandula angustifolia were steam extracted and were applied alone or in combination in 3 different concentration 10, 20 and 30% Data showed that In vitro, the 2 essential oils of Thymus and Lavender have shown strong antibacterial activity against the main strains of mastitis Staphylococcus and Streptococcus with potency similar to the control antibiotic. Intramammary application of 10% solution of Thymus and Lavender essential oils and of mixture thymus lavender has driven to a drastic decrease in the bacterial colony count in the different sample of milk after 4 consecutive treatments. External application or massage of a solution of thymus or lavender in Vaseline showed a strong antibacterial activity against the 2 bacterial pathogens Staphylococcus and Streptococcus. This activity is stronger than intramammary application with a rate of recovery of 100% with thymus essential oils.