Evaluation of the replacement laurel (Laurus nobilis) and Lawsonia Inermis L alcoholic essential oils with malachite green on the control Saprolegniasis in rainbow trout (Oncorhynchus mykiss) eggs

Articles in Press

Document Type : scientific research article

Authors

1 Gorgan University of Agricultural Sciences and Natural Resources

2 1- Department Aquaculture, Faculty of Fisheries and Environment Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran

3 Department Fisheries and aquatic ecology, Faculty of Fisheries and Environment Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran

4 Inland Waters Aquatic Stocks Research Center- Gorgan

Abstract

Background and objectives: This study was designed to prevent Saprolegniasis (Saprolegnia parasitica) in rainbow trout (Oncorhynchus mykiss) eggs using laurel (Laurus nobilis) and Lawsonia Inermis L alcoholic essential oils. This research was completely practical and carried out in environmental conditions.
Materials and methods: In this research, 3 treatments, each containing 3 concentrations, (9 treatments in total) were selected, and three trays with essential oils and two trays as controls with green malachite and pure water with temperature conditions of 13±2 degrees Celsius with a pH of 6.5-7.5 and a dissolved oxygen level of 6 ± 1 mg/liter for 18 days essential oils treatments are included 25, 50 and 70 mg/L and green malachite treatment is 3, 5 and 10 mg/L each with 3 repetitions by washing daily for 1 hour.
Results: The results showed that the combined use of two essential oils of with dose of 70 mg/liter had 70% survival in the egg emergence stage and based on statistical data, it had a significant difference with the samples and doses of the control treatments.
Conclusion: It can be concluded that the combined essential oils are suitable alternative to chemical disinfectants such as green malachite.

Keywords

Main Subjects

Journal of Utilization and Cultivation of Aquatics

Articles in Press, Accepted Manuscript
Available Online from 03 June 2025

Files

Share

How to cite

Statistics