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Dried leaves of Rosmarinus officinalis as a treatment for streptococcosis in tilapia
Year:
2010
Source of publication :
Journal of Fish Diseases
Authors :
Dudai, Nativ
;
.
Volume :
33
Co-Authors:
Zilberg, D., The French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Ben-Gurion, Israel
Tal, A., The French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Ben-Gurion, Israel
Froyman, N., Central Fish Health Laboratory, Ministry of Agriculture, Fishery Division, Nir-David, Israel
Abutbul, S., The Shraga Segal Department of Microbiology and Immunology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
Dudai, N., Department of Aromatic and Medicinal Plants, Agricultural Research Organization, Newe Ya'ar, Ramat Yishay, Israel
Golan-Goldhirsh, A., The French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Ben-Gurion, Israel
Facilitators :
From page:
361
To page:
369
(
Total pages:
9
)
Abstract:
Dietary application of dried Rosmarinus officinalis (rosemary) leaves as a treatment for streptococcal infection was studied in tilapia, Oreochromis sp. Feeding with dried rosemary leaves significantly reduced mortality following infection with Streptococcus iniae: 44% mortality in the group fed 8% rosemary, similar to oxytetracycline treatment (43% mortality), and significantly lower than the control (65%). Dietary administration of 16% rosemary significantly reduced mortality because of Streptococcus agalactiae infection in 44 g fish (62% and 76% in 16% rosemary and control, respectively), but not in a similar experiment conducted with 5.5 g fish. The antibacterial effect of rosemary on S. iniae was studied. Activity of rosemary cultivar Israel was reduced during the winter, but there was no significant change in cultivars Oranit and Star. Storage of powdered rosemary leaves at 50 °C resulted in fourfold and eightfold higher MIC24 h values after 3 and 4.5 months, respectively. Storage at -20 °C, 4 °C and 25 °C and autoclaving (120 °C) each resulted in a twofold increase in MIC24 h. Repeated exposures of S. iniae to rosemary did not affect minimal inhibitory concentration, suggesting no development of resistance to rosemary. © 2010 Blackwell Publishing Ltd.
Note:
Related Files :
Animal
Animals
bacteria
fish
Growth, Development and Aging
Rosmarinus
Streptococcus iniae
temperature
Tilapia
Show More
Related Content
More details
DOI :
10.1111/j.1365-2761.2009.01129.x
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
30688
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:56
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Dried leaves of Rosmarinus officinalis as a treatment for streptococcosis in tilapia
33
Zilberg, D., The French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Ben-Gurion, Israel
Tal, A., The French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Ben-Gurion, Israel
Froyman, N., Central Fish Health Laboratory, Ministry of Agriculture, Fishery Division, Nir-David, Israel
Abutbul, S., The Shraga Segal Department of Microbiology and Immunology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
Dudai, N., Department of Aromatic and Medicinal Plants, Agricultural Research Organization, Newe Ya'ar, Ramat Yishay, Israel
Golan-Goldhirsh, A., The French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Ben-Gurion, Israel
Dried leaves of Rosmarinus officinalis as a treatment for streptococcosis in tilapia
Dietary application of dried Rosmarinus officinalis (rosemary) leaves as a treatment for streptococcal infection was studied in tilapia, Oreochromis sp. Feeding with dried rosemary leaves significantly reduced mortality following infection with Streptococcus iniae: 44% mortality in the group fed 8% rosemary, similar to oxytetracycline treatment (43% mortality), and significantly lower than the control (65%). Dietary administration of 16% rosemary significantly reduced mortality because of Streptococcus agalactiae infection in 44 g fish (62% and 76% in 16% rosemary and control, respectively), but not in a similar experiment conducted with 5.5 g fish. The antibacterial effect of rosemary on S. iniae was studied. Activity of rosemary cultivar Israel was reduced during the winter, but there was no significant change in cultivars Oranit and Star. Storage of powdered rosemary leaves at 50 °C resulted in fourfold and eightfold higher MIC24 h values after 3 and 4.5 months, respectively. Storage at -20 °C, 4 °C and 25 °C and autoclaving (120 °C) each resulted in a twofold increase in MIC24 h. Repeated exposures of S. iniae to rosemary did not affect minimal inhibitory concentration, suggesting no development of resistance to rosemary. © 2010 Blackwell Publishing Ltd.
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