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A method to improve the resistance of high-density cultured Gifu tilapia to Streptococcus dolphin infection

A technology for tilapia and Streptococcus iniae, which is applied in fish farming, antibacterial drugs, pharmaceutical formulations, etc., can solve problems such as frequent diseases, unbalanced feed nutrition, and harm to tilapia production, and achieve enhanced survival. rate, good absorption and utilization, and the effect of improving immune protection

Active Publication Date: 2019-04-19
江苏恒泰环保科技发展有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

However, in recent years, the rapid spread of streptococcal disease has brought great harm to the production of tilapia, and the economic loss caused by streptococcal disease to tilapia is as high as hundreds of millions of dollars every year
High stocking density and unbalanced feed nutrition may be the main reasons for the frequent occurrence of diseases

Method used

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  • A method to improve the resistance of high-density cultured Gifu tilapia to Streptococcus dolphin infection
  • A method to improve the resistance of high-density cultured Gifu tilapia to Streptococcus dolphin infection
  • A method to improve the resistance of high-density cultured Gifu tilapia to Streptococcus dolphin infection

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Embodiment 1

[0018] A method for improving the anti-infection of Streptococcus iniae in high-density cultured Gifu tilapia, comprising the following steps:

[0019] Step 1, compound Chinese herbal medicine preparation: by weight, 100g of compound Chinese herbal medicine contains Thymus 15g, Huajuhong 25g, Thyme 20g, Earthworm 15g, orange peel 25g;

[0020] The 2nd step, the addition of compound Chinese herbal medicine: by weight, add 0.2~0.5g, 0.8~1g of above-mentioned compound Chinese herbal medicine respectively in every 100g feed, be mixed with 0.2%~0.5%, 0.8%~1% two A compound Chinese herbal medicine addition group;

[0021] Step 3: Feeding compound Chinese herbal medicine: when the fish body size is 50-100g, add 0.2%-0.5% compound Chinese herbal medicine feed; when the fish body size is higher than 200g, add 0.8%-1% compound Chinese herbal medicine feed The compound Chinese herbal medicine is prepared by the following steps: freeze-drying, grinding and pulverizing, passing through a ...

Embodiment 2

[0031] A method for improving the anti-infection of Streptococcus iniae in high-density cultured Gifu tilapia, comprising the following steps:

[0032] Step 1, compound Chinese herbal medicine preparation: by weight, 100g of compound Chinese herbal medicine contains Thymus 15g, Huajuhong 25g, Thyme 20g, Earthworm 15g, orange peel 25g;

[0033] The 2nd step, the addition of compound Chinese herbal medicine: by weight, add above-mentioned prepared compound Chinese herbal medicine 0.4g, 0.9g respectively in every 100g feed, be mixed with two kinds of compound Chinese herbal medicine adding groups of 0.4%, 0.9%; Through freeze-drying , After grinding and crushing, pass through an 80-mesh sieve, and store at 4°C;

[0034] Step 3, feeding with compound Chinese herbal medicine: when the fish body size is 50-100g, add 0.4% compound Chinese herbal medicine feed; when the fish body size is higher than 200g, add 0.9% compound Chinese herbal medicine feed;

[0035] Step 4. Breeding manag...

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Abstract

The invention discloses a method for improving the streptococcus iniae infection resisting capability of GIFT tilapia in high-density culture. The method comprises the steps of preparing of compound Chinese herbal medicine, adding, feeding and breeding management. Compared with the prior art, the method has the following advantages: (1) the immunological protection of the GIFT tilapia in high-density culture can be effectively improved, and the survival rate of GIFT tilapia infected with streptococcus iniae is improved; (2) the compound Chinese herbal medicine added in a feed belongs to environment-friendly feed additives, and has less negative effect on fish and water; (3) the blood and head-kidney immunological stress response can be effectively enhanced, and the liver stress injury is reduced; (4) the adopted technological steps of the method are simple, the Chinese herbal medicine is low, and easy to obtain and preserve, and can be well absorbed and utilized by a fish body, and excrement of the GIFT tilapia does not impact the water quality.

Description

technical field [0001] The invention belongs to the field of aquaculture, relates to aquaculture management and feed feeding technology, in particular to a method for improving the resistance of high-density cultured Gifu tilapia to Streptococcus iniae infection. Background technique [0002] Increasing the breeding density can not only improve the utilization rate of the unit water body, but also increase the total fish production and fisherman's farming income. High-density intensive farming has become one of the main means of fish farming. [0003] As one of the main freshwater aquaculture species in the southern provinces of my country, Gifu tilapia plays an important role in increasing fishery production and increasing fishermen's income. High-density intensive farming has become the main trend of Gifu tilapia farming. Under high-density breeding, the breeding density of tilapia can reach 2500-4000 fish / mu, and the yield per mu is more than 2500 jin. However, in recen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/13A23K50/80A23K10/30A61K36/752A61P31/04A61K35/62
CPCA01K61/00A61K35/62A61K36/185A61K36/53A61K36/752A61K2300/00Y02A40/81Y02P60/87
Inventor 强俊何杰徐跑陶易凡包景文孙意岚
Owner 江苏恒泰环保科技发展有限公司
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