Selenium-rich feed for cultivating selenium-rich fish and preparation method and application thereof

Abstract

The invention discloses selenium-rich feed for cultivating selenium-rich fish, which is characterized in that the content of total selenium in the selenium-rich feed is 1.5-20mg / kg, wherein selenomethionine accounts for 60%-80% of the total selenium, and selenocysteine accounts for 1%-10% of the total selenium. The selenium content of the selenium-rich fish cultivated by the selenium-rich feed is stable and controllable (the meat selenium content can reach to 1.5-10.0mg / kg, and the proportion of organic selenium is larger than or equal to 80 %), the selenium is safe in form and good in absorption effect, and patients lack of the selenium can improve the condition of lack of the selenium in a short time by eating the selenium-rich fish. In addition, a selenium-rich method is easy to popularize, and large-scale production can be achieved.

Description

technical field [0001] The invention relates to aquatic products, in particular to a method for cultivating selenium-enriched fish and selenium-enriched feed, and belongs to the technical field of aquatic products and feed production. Background technique [0002] Selenium is an essential trace element in animals. It has strong antioxidant properties and is an important part of the antioxidant enzyme glutathione peroxidase (GSH-PX) in the body. It can improve the body's immunity, Antagonize heavy metals in the body. The United Nations Health Organization announced at the Beijing Conference in 1996: "Selenium is an essential trace element for the human body." One-third of my country's population has insufficient selenium intake to varying degrees. Our nutrition society recommends an adult daily intake of 50-250 micrograms , but the intake of adults in my country is only 26-50 micrograms, and about 70% of China's population is in a selenium-deficient area [0003] Selenium is...

AI Technical Summary

Problems solved by technology

However, the residual inorganic selenium has a poor absorption effect for animals and has a high risk of toxicity. Improper use can easily cause selenium poisoning

[0009] The Chinese patent application with the application number 201010579798.1 discloses a kind of organic selenium-rich fish and its breeding method, but neither the selenium-rich fish nor the feed have reached a high selenium level, and the selenium content of the organic selenium-rich fish is far lower than that of the present invention. Selenium content of selenium-enriched fish

[0010] In addition, there are related news reports that fish with high total selenium content were found in the Heidingzi Reservoir of Chagan Lake in Jilin, but the selenium content of the fish was not tested, the selenium content is unknown, and the relevant known technologies are not available. Breeding method involving selenium-enriched fish and selenium-enriched feed

[0011] A comparison of the effects of selenium-enriched broccoli and selenium-enriched corn on the selenium status of rat tissues (Kong Linghong et al., Trace Elements and Health Research, Volume 18, Issue 1, Pages 10-12) disclosed that selenium-enriched broccoli and selenium-enriched corn, etc. Selenium-enriched grains can be used as selenium supplements, but there is no in-depth research and description on the forms of selenium and the effects on animal organisms.

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