Effects of Thymus vulgaris on Gram-Positive Bacteria (Lactococcus garvieae) Isolated from Rainbow Trout (Oncorhynchus mykiss) Farms in Iran.
Paper ID : 1120-ICIAQUA
Authors
Mehran AHMADPOOR *1, mehdi soltani2, ashkan zerger3, Ali Taheri Mirghaed4
1Ege University, Faculty of Fisheries, Department of Aquaculture, Fish Diseases Unit, Izmir, Turkey.
2, Department of Aquatic Animal Health Faculty of Veterinary Medicine University of Tehran Tehran, Iran
3Department of Aquatic Animal Health Faculty of Veterinary Medicine University of Tehran Tehran Iran
4Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
Abstract
Purpose: Lactococcus garvieae is the causal agent of Lactococcuzis disease, which affects both fish and humans, leading to pathogenicity in multiple fish species. Given the increasing prevalence of antibiotic resistance in fish, it is imperative to explore alternatives to conventional drug therapies. Consequently, researchers have directed their efforts towards investigating galenics possessing antibiotic properties.
Method: This study aimed to ascertain the minimum inhibitory concentrations (MIC) and minimum bactericidal concentrations (MBC) of thymus vulgaris against six distinct bacterial strains, including G.Tehran, G.K, 160A, LHK5, and L. garvieae. The recommended Microdilution method by the Clinical and Laboratory Standards Institute was employed in this research, with minor modifications and three replicates
Results: The results revealed favorable effects of the essential oil on the isolation of bacterial species, with most strains exhibiting an MIC at a minimum concentration of 1/6 microliter/ml. The MBC of the essential oil varied among the different bacterial strains, ranging from 3/2 to 12/8 microliter/ml.
Conclusions: The results obtained indicate that thyme essential oil is highly effective in managing Lactococcus garvieae bacteria in laboratory settings. Therefore, it shows significant potential as a valuable tool for improving outcomes in fish farms. However, further research is necessary to confirm these findings and fully understand the extensive benefits of thyme essential oil in this particular context.
Keywords: Antimicrobial, Minimum Bacterial Concentration, Minimum İnhibitory Concentrations, Thymus Vulgaris
Keywords
Antimicrobial, Minimum Bacterial Concentration, Minimum İnhibitory Concentrations, Thymus Vulgari
Status: Abstract Accepted (Poster Presentation)