Complex immunoenhancer for prawns

An immune enhancer and shrimp feed technology, which is applied in the field of compound immune enhancer for shrimp, can solve the problems of morbidity, poor disease resistance, and reduced shrimp resistance of farmed shrimp, achieve no toxic side effects, enhance immunity, and promote animal health. effect of growth

Inactive Publication Date: 2015-12-09
威海光洋生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, my country's prawn farming industry has developed rapidly, and the aquaculture area has increased year by year. More and more farmers adopt intensive factory farming of prawns. Under such high-density farming conditions, prawns grow fast, but the resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Weigh 70g of laminarin polysaccharide, 160g of astragalus polysaccharide, 200g of zymosan, 250g of chitosan, 50g of allicin, 100g of vitamin C, and 170g of secondary powder, stir and mix evenly, and pass through a 100-mesh sieve to make an immune enhancer for prawns. Then add it in the aquatic feed according to the proportion of 0.2%.

[0015] The results of the breeding experiment showed that the survival rate of the prawns in the experimental group was 95%, while that of the control group was 82%; the specific growth rate of the prawns in the experimental group was 11.1%, while that of the control group was 8.3%; the bait of the experimental group The coefficient was 2.38, and the feed coefficient of the control group was 3.19.

Embodiment 2

[0017] Weigh 70g of laminarin polysaccharide, 160g of astragalus polysaccharide, 200g of zymosan, 250g of chitosan, 50g of allicin, 100g of vitamin C, and 170g of secondary powder, stir and mix evenly, and pass through a 100-mesh sieve to make an immune enhancer for prawns. Then add it in the aquatic feed according to the proportion of 0.2%.

[0018] In the breeding test, Penaeus vannamei was infected with white spot syndrome virus after 30 days of feeding with the feed added with immune enhancer. After 10 days of challenge, the survival rate of the shrimp was 86%, while the survival rate of the group without immune enhancer was 35%.

Embodiment 3

[0020] Weigh 70g of laminarin, 200g of zymosan, 250g of chitosan, 50g of allicin, 100g of vitamin C, and 330g of secondary powder, stir and mix evenly, and pass through a 100-mesh sieve to make an immune enhancer for aquaculture animals. 0.2% is added in aquatic feed.

[0021] In the breeding experiment, Penaeus vannamei was infected with white spot syndrome virus after 30 days of feeding with the feed added with immune enhancer. After 10 days of challenge, the survival rate of the shrimp was 70%, while the survival rate of the group without immune enhancer was 37%. Due to the lack of the synergistic effect of astragalus polysaccharide in the immune additive of this example, the survival rate of prawns is not as high as that in Example 2.

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PUM

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Abstract

The invention provides complex immunoenhancer for prawns. The complex immunoenhancer is prepared from, by weight, 5-10% of laminarin, 10-20% of astragalus polysaccharide, 20-30% of zymosan, 20-30% of chitosan, 5-10% of garlicin, 5-15% of vitamin C and 10-30% of wheat middling. The raw materials are ground through an ultrafine grinder, screened by a 100-mesh screen and then evenly mixed quantitatively according to the ratio, and the adding proportion of the complex immunoenhancer in fodder is 0.2-0.5%. The complex immunoenhancer can obviously enhance the immunity of the bred prawns, can promote the growth of the prawns and is free of toxins, harm and residues.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a compound immune enhancer for prawns. Background technique [0002] In recent years, my country's prawn farming industry has developed rapidly, and the aquaculture area has increased year by year. More and more farmers adopt intensive factory farming of prawns. Under such high-density farming conditions, prawns grow fast, but the resistance of prawns is significant. decline, poor disease resistance, and foreign pathogenic bacteria are easy to infect, causing the disease of cultured prawns. However, the use of antibiotics to treat the diseased shrimp can be effective in the short term, but the subsequent negative effects are also obvious. The use of low doses of chemical agents such as chlorine, formalin, etc. has no effect on the source of the disease, because the dose required to kill the pathogenic bacteria is often fatal to the prawn larvae. Therefore, it is the focus of...

Claims

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Application Information

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IPC IPC(8): A23K1/18A23K1/16
Inventor 王晓方刘旭雅元福杰
Owner 威海光洋生物科技有限公司
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