Composite immunity strengthening agent for fresh water young fish

An immune enhancer and freshwater fish technology, applied in the field of feed additives, can solve problems such as poor breeding environment, decline in seed quality, and degradation of germplasm resources, and achieve the effects of simple production process, stable source, and enhanced immunity

Inactive Publication Date: 2009-03-25
OCEAN UNIV OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current seed price is on the low side, resulting in poor quality of seed bait. In addition, the germplasm resources of freshwater fish parents are seriously degraded and the breeding environment is harsh. In turn affecting the farming of adult fish

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] Take by weighing β-glucan 26kg, chitosan 22kg, Bacillus subtilis 16kg, vitamin C 12kg, Bupleurum 10kg, astragalus 8kg and Eucommia ulmoides 6kg, these 7 components are ground into fine powder (over 200 mesh), then in Mix evenly in a mixer (required coefficient of variation ≤ 5%), that is the composite immune enhancer for freshwater fry of the present invention.

[0008] From May 18th to September 16th, 2006, tilapia (initial weight: 3.69±0.09g), crucian carp (initial weight: 4.32±0.11 g), cultivation of grass carp (initial weight: 6.36 ± 0.15g) and yellow catfish (initial weight: 2.78 ± 0.08g) fry, the compound immune enhancer for freshwater fish fry of the present invention is not added in the feed of the control group (3 repetitions) , add 0.1% of the product of the present invention in the experimental feed (3 repetitions). After a 35-day feeding experiment, the survival rates were increased by 19-26%, 15-22%, 12-19% and 10-16%, respectively. Moreover, the three ma...

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PUM

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Abstract

Disclosed is a compound immunopotentiator for freshwater fry, which is characterized in that the compound immunopotentiator is composed of by weight proportion: 25-35% of Beta-glucan, 20-30% of chitosan, 15-25% of bacillus subtilis, 10-15% of vitamin C, 8-13% of bupleurum, 7-11% of astragalus and 5-8% of eucommia ulmoides. The compound immunopotentiator has the advantages that: (1) the compound immunopotentiator is used as feed additive in fry feed with the addition of 0.1%-0.2%; (2) the immunity of fry is obviously enhanced and the survival rate is improved; (3) the immune effect is higher than the immune effect of single immunopotentiator; the immunosuppression phenomenon caused by the long-term application of single immunopotentiator is overcome so that the compound immunopotentiator can be used in the whole cycle of animal breeding; (4) the source of raw materials is stable; the raw materials have low price, and the production process is simple.

Description

technical field [0001] The invention relates to a feed additive, in particular to a compound immune enhancer for freshwater fry. Background technique [0002] Seed quality is a prerequisite for successful aquaculture. The cultivation of traditional freshwater fish fry mainly relies on fresh biological bait such as rotifers and cladocerans, which greatly increases the cost of seedling cultivation, and because the fresh biological bait is sometimes unbalanced in nutrition and easy to carry pathogenic microorganisms, resulting in a decline in seed quality. In recent years, the success of artificial opening bait technology has greatly reduced the cost of raising seedlings. However, the current seed price is on the low side, resulting in poor quality of seed bait. In addition, the germplasm resources of freshwater fish parents are seriously degraded and the breeding environment is harsh. Then affect the breeding of adult fish. [0003] The existing artificial feed has the abov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/46A61P37/04A23K1/16A23K1/18A61K31/375A61K31/716A61K31/722A61K35/74A23K10/18A23K10/30A23K20/163A23K20/174A23K50/80A61K35/742
CPCY02A40/818
Inventor 林仕梅麦康森艾庆辉刘万顺
Owner OCEAN UNIV OF CHINA
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