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| Evaluation of Antifungal Activity of New Combined Essential Oils in Comparison with Malachite Green on Hatching Rate in Rainbow Trout (Oncorhynchus mykiss) Eggs |
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S.M. Mousavi,
S.S. Mirzargar,
H. Ebrahim Zadeh Mousavi,
R. Omid Baigi,
A. Khosravi,
A. Bahonar and M.R. Ahmadi |
Abstract:
The aim of this study was introducing a new herbal constitution
for malachite green in hatcheries. In this study, antifungal activities
of a new Combination of Essential Oils (CEO) from the herbs; Thymus
vulgaris, Salvia officinalis, Eucalyptus globulus and
Mentha piperita in Oncorhynchus mykiss eggs and its effects
on hatching rate in comparison with malachite green (a specific treatment
for the control of saprolegniasis) were studied. After fertilization,
eggs were transferred to incubators and then treated with five concentration
of the combined essential oils with concentrations: 10, 50, 100, 150 and
200 ppm, respectively and malachite green (1 ppm) using constant flow
treatment method for incubation period. One incubator was as control without
any treatment The water quality factors were controlled over the study
period. In the end of hatching rate, the mold infection and hatching rate
were calculated. The hatching percentage in five treatment groups of CEO
were 69.99% at 10 ppm, 63.61% at 50 ppm, 62.1% at 100 ppm, 60.53% at 150
ppm, 54.63% at 200 ppm, 60%. 83 at 1 ppm of malachite green group and
53.48% in control group, respectively. The results revealed significant
antifungal effects of the combined essential oils in comparison with malachite
green on fish eggs so that it could decrease mold infection and increase
hatching rate on concentration 10 ppm (p < 0.05). This indicated that
this combination of essential oils may be a promising antifungal agent
in aquaculture.
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How to cite this article:
S.M. Mousavi, S.S. Mirzargar, H. Ebrahim Zadeh Mousavi, R. Omid Baigi, A. Khosravi, A. Bahonar and M.R. Ahmadi, 2009. Evaluation of Antifungal Activity of New Combined Essential Oils in Comparison with Malachite Green on Hatching Rate in Rainbow Trout (Oncorhynchus mykiss) Eggs. Journal of Fisheries and Aquatic Science, 4: 103-110.
DOI: 10.3923/jfas.2009.103.110
URL: https://scialert.net/abstract/?doi=jfas.2009.103.110
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