Composite premixed feed for reducing heavy metal residue in animal products as well as preparation method and application thereof

Abstract

The invention discloses a composite premixed feed for reducing heavy metal residue in animal products as well as a preparation method and application thereof. The composite premixed feed comprises the following components in percentage by weight: 40%-88% of inorganic absorbent, 0.6%-9% of organic absorbent, 5%-25% of inorganic absorbent, 5%-30% of super-micro smashing tea powder, 0.0002%-0.015% of Se and 0.2%-10% of vitamin C. The composite premixed feed provided by the invention is added to livestock and poultry (pig, chicken and duck) compound feed, can be used for releasing the oxidation damage and other toxicity brought by heavy metal, and reducing the residue of multiple heavy metals in the animal products effectively, and has the characteristics of rich raw materials, moderate cost as well as safety and no toxicity, and is simple and convenient to prepare. The feed provided by the invention fills the blank of feed products obtained through heavy metal reduction control in the market.

Description

technical field [0001] The invention belongs to the field of animal feed, and in particular relates to a compound premixed feed for reducing heavy metal residues in animal products, a preparation method and application thereof. Background technique [0002] In recent years, the rapid development of my country's economy and the improvement of people's living standards have greatly promoted the development of the livestock and poultry industry. In 2010, my country's meat, poultry eggs, and milk production reached 79.25 million tons, 27.65 million tons, and 35.7 million tons, respectively. Ton. Feed is the source of animal food safety. Feed safety is not only related to the safety and health of animals, but also affects the economic benefits of the breeding industry. At the same time, it directly or indirectly affects human health. Heavy metal pollution is currently one of the main factors affecting animal food safety. . The heavy metal elements commonly referred to in the far...

AI Technical Summary

Problems solved by technology

Due to the different physical and chemical properties (ionic radius, charge distribution, etc.) of various heavy metals, and different minerals have different adsorption properties for metal ions, it is difficult for any single adsorbent to effectively adsorb multiple heavy metal elements in feed at the same time.

Appropriate supplementation of calcium, iron, zinc, selenium and other mineral elements in feed can directly or indirectly affect the absorption and transport of heavy metals. At the same time, trace elements such as zinc and selenium can improve the body's antioxidant performance, reduce the toxicity of heavy metals and The deposition of heavy metals in some tissues, but the effect is poor when used alone, and according to the No. 1224 Announcement "Safe Use of Feed Additives" issued by the Ministry of Agriculture in 2009, the macro and trace elements in the feed should not exceed the maximum limit value. Improper addition It will lead to environmental pollution, cost increase, element imbalance and other problems

β-carotene, vitamin C, vitamin E, etc. have strong antioxidant properties. Adding them in an appropriate amount can enhance the antioxidant function of animals and alleviate the toxic effects of heavy metals on animals, but they cannot effectively reduce the residues of heavy metals in animal foods , and there are problems such as high cost, short storage time, and easily affected stability

Studies have shown that some plant extracts (such as onion or garlic extracts, citrus flavin, quercetin, and tea polyphenols, etc.) have strong antioxidant functions and can alleviate the toxicity of heavy metals, but most of the plants or their extracts Animal products are all in the stage of experimental animal research, and are rarely used in livestock and poultry production, and there are problems such as high production technology requirements, high cost, and single action objects.

Complexing agents such as Calcitonin (Ca~DTPA), calcium edetate (Ca~EDTA), sodium dimercaptosuccinate (Na~DMS), and metallothionein (MT) have the function of complexing heavy metals such as lead , so that it can be complexed to form a complex to be excreted from the body, reduce the absorption and deposition of heavy metals in animals, and have a direct and rapid excretion effect on animals poisoned by high doses of heavy metals. It can be used as a treatment for acute poisoning, but these complexing agents may Affects the metabolism of essential trace elements, resulting in varying degrees of damage to certain organs and complexation syndrome, so it cannot be used as a feed additive

[0005] In general, the current research on the reduction and control of heavy metals in feed mainly focuses on a single technical means and products, targeting a single type of heavy metals. Single, affected by many factors, high cost, poor stability, and affecting the absorption and utilization of beneficial ingredients, etc., and the heavy metal pollution in the actual production process is mainly composed of multiple heavy metal pollution rather than single pollution. Therefore, these Technology cannot effectively control heavy metal residues in animal products, and it is difficult to meet the needs of the current feed industry, animal production enterprises and food safety. At the same time, compound premixed feed products that reduce heavy metal residues in animal products are still blank in the market

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