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Organic selenium-enriched crab feed additive, preparation method thereof and method for culturing selenium-enriched crabs

A feed additive, technology rich in organic selenium, applied in animal feed, animal feed, fish farming, etc., can solve the problem of quantitative control of selenium element content, research on feed additives rich in organic selenium for crabs, and failure to effectively improve the survival rate of crabs, etc. problem, to achieve the effect of non-toxic side effects, hard and brittle shell, and improved survival rate

Active Publication Date: 2013-03-13
SUZHOU SETEK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The feed provided by the above patents is basically a premix or feed additive with a conventional nutrient ratio, which cannot effectively improve the survival rate of crabs
The existing selenium-containing crab feed products are all added with inorganic selenium sources, and some feeds pollute the water quality, and there is no quantitative control of the content of selenium in the feed
At present, there are basically no relevant technical personnel to conduct research on organic selenium-rich crab feed additives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The raw materials of organic selenium-rich crab feed additives, such as Antarctic krill, small miscellaneous fish and conch, etc., together with the auxiliary materials commonly used in feed additives, control the amount of auxiliary materials added according to the selenium content required by the additive. Proportionally mixed and crushed, sieved through a 3.5mm sieve, at 3kg / cm 2 Under steam pressure, tempering is carried out at a temperature of 70-90°C for 30-200 seconds. Then, utilize a granulator (preferred American CPM granulator) to crush the powdery material under the extrusion force of a die and a pressure roller (commonly used die thickness is 45mm, and the die aperture is 4.5mm), so that it has The powders at a certain temperature and humidity are close to each other and rearranged to make pellet feed. Then use a pressure of 3kg / cm 2 , steam heating and aging with a steam volume of 2%, the aging time is 1-2 hours, and the temperature is 70-90°C. Finally, ...

Embodiment 2

[0030] The present invention selects Antarctic krill, small miscellaneous fish and conch as raw materials, prepares organic selenium-rich crab feed additives according to the preparation method described in Example 1, and feeds crabs alone for consumption. The breeders began to feed the organic selenium-rich crab feed additive on May 10, 2008. The conventional feeding method was adopted, and the total amount of crab feed was 0.75-2.5kg / mu each time, that is, the amount of crab feed added each time The total amount of selenium is 1.5-25mg selenium / mu crab, and it is fed once every other day for a total of 5 months. Then, the selenium content of crab meat was determined. According to the different proportions of Antarctic krill, small miscellaneous fish and conch, 5 control experiments were set up.

[0031] Control Experiment 1

[0032] (1), test method

[0033] Antarctic krill: small miscellaneous fish: conch = 2:1:2;

[0034] (a) Selenium content

[0035] After the crabs ...

Embodiment 3

[0081] The present invention uses selenium-enriched marine products as raw materials, Antarctic krill: small miscellaneous fish: conch = 3:3:4, and prepares an organic selenium-rich crab feed additive according to the preparation method described in Example 1, and feeds crabs alone. The breeders began to feed selenium-enriched crab feed on May 10, 2008. The crab feed was conventionally fed. The total amount of crab feed was 0.75-2.5kg / mu each time, and it was fed once every other day. 5 months. Then, the selenium content of crabmeat was determined. By adding different amounts of excipients, 5 levels of selenium were controlled, and 5 control experiments were set up.

[0082] Control Experiment 6

[0083] (1), test method

[0084] The selenium content is 1.0mg / kg.

[0085] (2), test results

[0086] (a) Selenium content

[0087] The measured results after the crabs are mature show that there is no significant difference between the selenium content of the crabs in the tes...

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Abstract

The invention relates to an organic selenium-enriched crab feed additive and a preparation method thereof, and also relates to a method for preparing selenium-enriched crab feed by the additive and a method for culturing selenium-enriched crabs. The organic selenium-enriched crab feed additive takes selenium-enriched marine products as main raw materials, wherein the selenium content is between 2and 10 mg / kg, and organic selenium / total selenium content is more than or equal to 60 weight percent. The preparation method comprises the following steps of: mixing the raw materials, and crushing; and tempering, pelletizing, curing, cooling and packaging. The selenium-enriched crab feed is prepared from the additive and ordinary crab feed in a weight ratio of (1-2):(0-10). When the selenium-enriched crabs are cultured by using the selenium-enriched crab feed, the selenium-enriched crab feed is fed at intervals of a day for over four months from May every year, wherein the total selenium amount fed every time is between 1.5 and 25 mg / per mu crab. The selenium-enriched crab feed can promote the crabs to grow, improve the disease-resistant capacity of the crabs and improve the quality of crab meat.

Description

technical field [0001] The invention relates to an organic selenium-rich crab feed additive and a preparation method thereof, and also relates to an organic selenium-rich crab feed additive prepared by using the organic selenium-rich crab feed additive and a breeding method for selenium-rich crabs. Background technique [0002] Selenium, whose element symbol is Se, is an essential trace element for the human body. It has biological properties such as anti-cancer, anti-oxidation (aging), improving human immunity, and antagonizing heavy metals. The lack of selenium can lead to the occurrence of Kashin-Beck disease, Keshan disease, etc. Selenium is a component of glutathione peroxidase, which can scavenge oxygen free radicals. In addition, selenium also has the effects of delaying aging, improving immunity, anti-cancer, and protecting cardiovascular. According to the data released by WHO, there are more than 40 countries in the world belonging to low-selenium or selenium-defic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K1/18A23K1/10A01K61/00A23K10/22A23K20/20A23K50/80
CPCY02A40/81
Inventor 毕德尹雪斌朱元元李飞刘颖
Owner SUZHOU SETEK
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