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Application of Chinese gall extract for controlling streptococcal disease in aquaculture animals

A gallnut, extract technology, applied in the direction of application, antibacterial medicine, animal feed, etc.

Inactive Publication Date: 2011-10-26
GUANGXI INST OF BOTANY THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of a single component or a component compatible with other components for the prevention and treatment of streptococcal diseases in tilapia and other aquaculture products has not been reported.

Method used

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  • Application of Chinese gall extract for controlling streptococcal disease in aquaculture animals

Examples

Experimental program
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Effect test

Embodiment 1

[0013] Embodiment 1: the preparation of Galla gall extract

[0014] Gallnuts harvested in the same year were taken, crushed to 100 mesh, extracted three times with 90% ethanol, the amount of solvent was 5 times, 3 times, and 3 times the weight of the medicinal material, and the extraction time was 3 hours, 3 hours, and 3 hours respectively. Combine the extracts, concentrate, reclaim 90% ethanol (recovered ethanol accounts for 90% of the amount of ethanol added), then filter, and the filtrate continues to be concentrated to no solvent to obtain a light brown extract, which is Galla galla extract.

Embodiment 2

[0015] Embodiment 2: the preparation of Galla gall extract

[0016] Gallnuts harvested in the same year were taken, crushed to 160 mesh, and extracted twice with 70% ethanol. The amount of solvent was 5 times and 4 times the weight of the medicinal material respectively, and the extraction time was 3 hours and 2 hours respectively. Combine the extracts, concentrate, reclaim 80% ethanol (recovered ethanol accounts for 80% of the amount of ethanol added), then filter, and the filtrate continues to be concentrated to no solvent to obtain a light brown extract, which is Galla galla extract.

Embodiment 3

[0017] Embodiment 3: the preparation of Galla gall extract

[0018] Gallnuts harvested in the same year were taken, crushed to 120 mesh, extracted three times with 60% ethanol, the amount of solvent was 4 times, 4 times, and 3 times the weight of the medicinal material, and the extraction time was 3 hours, 2 hours, and 2 hours respectively. Combine the extracts, concentrate, reclaim 85% ethanol (recovered ethanol accounts for 85% of the amount of ethanol added), then filter, and the filtrate continues to be concentrated to no solvent to obtain a light brown extract, which is Galla galla extract.

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Abstract

The invention discloses an application of a Chinese gall extract for controlling the streptococcal disease in aquaculture animals and in particular relates to an application of a Chinese gall extract for controlling the streptococcal disease in Tilapia fish. The invention also discloses a feed with the function of controlling the streptococcal disease in Tilapia fish, which contains the Chinese gall extract. Preferably, the content of the Chinese gall extract accounts for 1% to 10% of the total weight of the feed, more preferably 1% to 5%, and most preferably 1% to 2%. When the feed containing the Chinese gall extract is used for controlling the streptococcal disease, the Chinese gall extract is directly mixed in the common commercially-available feed before feeding, so as to overcome theproblem of needing to push aquaculture animals together before applying veterinary drugs in the soaking and oral intake mode, reduce the labor intensity of aquaculture farmers, reduce the man-made interference on aquaculture farmers (particularly Tilapia fish) and avoid the stress impact on Tilapia fish. Besides, the feed containing the Chinese gall extract has the advantages of less toxicity andmore safety.

Description

technical field [0001] The present invention relates to the application of plant extracts, in particular to the application of Galla galla extract in preventing and treating streptococcal diseases of aquaculture products. Background technique [0002] Streptococcus iniae and Streptococcus agalactiae are the most serious pathogenic bacteria in aquaculture production, with strong pathogenicity and great harm. The incidence of streptococcus infection in tilapia is almost 100%, and the cumulative mortality rate is 15-70%. Among the aquatic medicines allowed by the state at present, the protection rate of oral administration and soaking fish fry reaches 43.8%, and the protection rate of tilapia by injection vaccine reaches 93.8%. Although the immunization method can achieve good control effect in the prevention and treatment of streptococcal diseases, its popularization and application in production is limited by many factors such as the vaccine immunization route, water environ...

Claims

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Application Information

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IPC IPC(8): A61K35/64A23K1/16A61P31/04A23K10/30
Inventor 吴颖瑞方宏文永新何成新何瑞杰
Owner GUANGXI INST OF BOTANY THE CHINESE ACAD OF SCI
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