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Method for cultivating selenium-enriched tilapia

A farming method and tilapia technology, applied in fish farming, climate change adaptation, animal feed, etc., can solve the problem of low selenium content in tilapia, achieve high affinity, enhance photosynthesis, and promote absorption.

Inactive Publication Date: 2017-06-13
黄怀勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country's tilapia aquaculture industry has made great achievements in recent years, and the aquaculture method has also transitioned from extensive to intensive and semi-intensive aquaculture. However, the selenium content of aquaculture tilapia is low, and it is difficult to meet the needs of consumers. Therefore, breeding a tilapia with high content of selenium has great market promotion value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1. Preliminary preparation:

[0048] Preparation of benthic algae attachment substrate: in parts by weight, after stirring 15 parts of gum arabic, 30 parts of fly ash, 8 parts of kaolin and 15 parts of water, titrate 3 parts by mass at a rate of 2 mL / min while heating up The acetic acid aqueous solution with a fraction of 7% was reacted for 30 minutes at a temperature of 75° C. and a stirring speed of 100 r / min after the titration, and finally molded to obtain a benthic algae attachment substrate.

[0049] Preparation of the natural plant source fungicide: in parts by weight, after uniformly mixing 2 parts of menthol, 1 part of azadirachtin, 1 part of allicin and 300 parts of deionized water, the natural plant source fungicide is obtained.

[0050] Preparation of selenium-enriched feed: in parts by weight, after mixing 15 parts of shepherd's purse leaves, 5 parts of cabbage leaves and 5 parts of duckweed, seal and ferment for 8 hours, take it out and mix in 28 parts of ...

Embodiment 2

[0057] 1. Preliminary preparation:

[0058] Preparation of benthic algae attachment substrate: in parts by weight, after stirring 20 parts of peach gum, 38 parts of fly ash, 11 parts of kaolin and 19 parts of water, titrate 4 parts at a rate of 2.5 mL / min while heating up The acetic acid aqueous solution with a mass fraction of 8% was reacted for 45 minutes at a temperature of 80° C. and a stirring speed of 130 r / min after the titration, and finally molded to obtain a benthic algae attachment substrate.

[0059] Preparation of the natural plant source fungicide: in parts by weight, after uniformly mixing 2.5 parts of menthol, 2 parts of azadirachtin, 2 parts of allicin and 375 parts of deionized water, the natural plant source fungicide is obtained.

[0060] Preparation of selenium-enriched feed: in parts by weight, after mixing 22 parts of shepherd's purse leaves, 8 parts of cabbage leaves and 9 parts of duckweed, seal and ferment for 10 hours, take it out and mix in 30 parts...

Embodiment 3

[0067] 1. Preliminary preparation:

[0068]Preparation of benthic algae attachment substrate: in parts by weight, after stirring 30 parts of gum arabic, 50 parts of fly ash, 14 parts of kaolin and 23 parts of water, titrate 5 parts at a speed of 2.5 mL / min while heating The acetic acid aqueous solution with a mass fraction of 11% was reacted for 47 minutes at a temperature of 82° C. and a stirring speed of 160 r / min after the titration, and finally molded to obtain a benthic algae attachment substrate.

[0069] Preparation of the natural plant source fungicide: in parts by weight, after uniformly mixing 2.5 parts of menthol, 2.5 parts of azadirachtin, 2 parts of allicin and 390 parts of deionized water, the natural plant source fungicide was obtained.

[0070] Preparation of selenium-enriched feed: in parts by weight, after mixing 24 parts of shepherd's purse leaves, 9 parts of cabbage leaves and 8 parts of duckweed, seal and ferment for 11 hours, take it out and mix in 37 par...

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Abstract

The invention discloses a method for cultivating selenium-enriched tilapia. The method comprises a step (1) of preparing selenium-enriched spirulina seed liquid; a step (2) of performing culture pond management: deeply ploughing soil at the bottom of a culture pond for 20-30 cm, spraying natural botanical fungiticide according to an amount of 6-12 kg / 100 m2, performing insolation for 15-20 days, injecting pond water with a depth of 1-1.5 m into the culture pond, placing benthic algae attaching substrate at the bottom of the pond, applying selenium-enriched spirulina seed liquid according to an amount of 600-1200 g / 100 m2, and culturing selenium-enriched spirulina for 12-18 days at a culture pond water temperature of 25-35 DEG C; and a step (3) of performing feeding management. By adoption of technical means, the selenium-enriched tilapia can be cultivated efficiently, the content of selenium element of tilapia is effectively increased while the yield of the tilapia is improved, and the method can be popularized in a large area for a long term and have wide market application values.

Description

[0001] 【Technical field】 [0002] The invention relates to the field of tilapia cultivation, in particular to a method for cultivating selenium-enriched tilapia. [0003] 【Background technique】 [0004] Selenium is an essential trace element for the human body. It has biological functions such as scavenging free radicals in the body, anti-aging, enhancing human immunity, antagonizing heavy metal toxicity, and preventing cancer. Diseases caused by selenium deficiency and effective ways to prevent and fight cancer. More than 70 countries in the world are in a state of selenium deficiency, and China is one of the regions with the most serious selenium deficiency in the world. The low-selenium areas in the country account for 46% of the total area of ​​the country. Because the selenium content of crops produced in low-selenium soil areas is low, they cannot meet the normal physiological needs of the human body. Therefore, there is a strong demand for selenium-rich foods and health...

Claims

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Application Information

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IPC IPC(8): A01K61/10A01K63/04A23K50/80
CPCA01K61/00A01K63/04Y02A40/81Y02A40/818
Inventor 黄怀勇
Owner 黄怀勇
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