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Method for improving streptococcus iniae infection-resisting capacity of GIFT oreochromis niloticus during high-temperature stress

A technology for tilapia and streptococcus iniae, which is applied in the application, animal feed, animal feed and other directions, can solve the problems of economic loss of tilapia aquaculture industry, and achieve the goal of reducing liver damage, good palatability and improving infection ability. Effect

Inactive Publication Date: 2014-04-23
FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Especially in the summer of 2013, the high temperature in some provinces and cities reached about 40°C and lasted for nearly a month, which caused great economic losses to the tilapia aquaculture industry.

Method used

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  • Method for improving streptococcus iniae infection-resisting capacity of GIFT oreochromis niloticus during high-temperature stress
  • Method for improving streptococcus iniae infection-resisting capacity of GIFT oreochromis niloticus during high-temperature stress
  • Method for improving streptococcus iniae infection-resisting capacity of GIFT oreochromis niloticus during high-temperature stress

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Embodiment Construction

[0011] 1. Preparation of basal rations. Prepare basal rations with different nutrients according to different growth stages of Gifu tilapia. When the body weight is between 50g and 200g, the protein level is about 33%, and the fat level is 8%. Diet; when the body weight is higher than 200g, prepare a basal diet with a protein level of about 28% and a fat level of 7%.

[0012] 2. The preparation of the compound Chinese herbal medicine formula. The components and weight percentages of the compound Chinese herbal medicine are (based on 100g compound Chinese herbal medicine): aloe-emodin 20g, honeysuckle 15g, Acanthopanax 15g, chrysanthemum 15g, peppermint extract 10g, fishy Grass 15g, Hawthorn 10g. After the compound Chinese herbal medicine is dried and ground, the proportioning is carried out according to the above ratio. According to the principle of adding 2g or 3g per 100g of basal diet, it is formulated as a medicated feed with 2% or 3% compound Chinese herbal medicine.

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Abstract

The invention discloses a method for improving the streptococcus iniae infection-resisting capacity of GIFT oreochromis niloticus during high-temperature stress. The method comprises the following steps: preparing basic ration and a compound Chinese medicinal herb formula, and feeding feed. Due to the adoption of the method, the immunity index of the GIFT oreochromis niloticus during high-temperature stress can be effectively increased, the liver damage is reduced, meanwhile, the streptococcus iniae infection-resisting capacity of the GIFT oreochromis niloticus can be improved, the morbidity is reduced, and the survival rate of the GIFT oreochromis niloticus infected with streptococcus iniae can be increased. Several Chinese medicinal herbs involved in the method are relatively available and relatively low in cost; a production technology is simple. The basic ration with the compound Chinese medicinal herbs has relatively good palatability, and after the basic ration is taken by the GIFT oreochromis niloticus, drug residues in bodies of the GIFT oreochromis niloticus are relatively few, and therefore, the GIFT oreochromis niloticus meets the requirements on green healthy aquatic products.

Description

technical field [0001] The invention belongs to feed formulation technology for aquaculture, and specifically relates to a feed preparation and feeding method that can improve the ability of Gifu tilapia to resist Streptococcus iniae infection under high temperature stress. Background technique [0002] Streptococcus is widely distributed in nature, ubiquitous in water, animal body surface, genitourinary tract and emulsion, and is pathogenic to mammals, reptiles, amphibians and fish, and is a human-animal-fish Comorbid pathogens have caused serious economic losses to the livestock and aquaculture industries. [0003] The optimum growth temperature for streptococcus is 33°C-37°C, therefore, streptococcal disease is very easy to break out in the environment of high temperature in summer. Tilapia is a subtropical fish with a suitable growth temperature of 29-32°C. In recent years, with the intensification of global warming, the water temperature reaches 35°C-37°C during the h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/18A23K1/16
Inventor 强俊徐跑何杰李瑞伟朱志祥
Owner FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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