Preparation method and application of zinc lysine feed additive with moderate chelation strength

Abstract

The invention relates to a preparation method and an application of a zinc lysine feed additive with moderate chelation strength. According to the preparation method, feed-grade L-lysine sulfate and feed-grade zinc sulfate are used as reaction raw materials to conduct a chelation reaction under a proper condition by an aqueous system synthesis method to prepare the novel zinc lysine feed additive with medium chelation strength. The invention further provides the application of the zinc lysine feed additive with medium chelation strength prepared by the method as a novel zinc-source feed additive of chickens. Compared with zinc sulfate and a conventional organic zinc additive, the zinc lysine feed additive has the advantages of moderate chelation strength and high biological value, and can be used for effectively preventing and treating zinc deficiency of the chickens and other livestock and poultry and reducing environment pollution caused by zinc discharge. The method uses easily available reaction raw materials with low cost, adopts a current organic trace element mainstream synthesis process, namely the aqueous system synthesis method, and has the advantages of high reaction yield, good product chelation strength reproducibility, simple operation, low cost and the like.

Description

technical field [0001] The invention relates to a preparation method of an organic zinc feed additive, in particular to a preparation method and application of a medium chelating strength zinc lysine feed additive. Background technique [0002] Zinc is one of the essential trace elements for animals and has a wide range of biological functions in the body, so it is called "life element" (Yu Yu, 2008; Liang Jianguang, 2006). The zinc content in livestock and poultry diets is low (Su Qi et al., 1994), and there are many factors that limit the absorption and utilization of zinc. Therefore, it is usually necessary to add additional zinc in production (Huang et al., 2007) to prevent zinc deficiency in livestock and poultry. At present, inorganic zinc (such as zinc sulfate or zinc oxide) is the most commonly used form of zinc addition in livestock and poultry diets in my country, but inorganic zinc sources are easy to destroy vitamins and other active nutrients in the feed, and th...

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Problems solved by technology

In recent years, there have been many reports on the synthesis conditions of organic trace elements using liquid phase synthesis (Kong Suifei, 2011; Wu Jiangang et al., 2008; Zhong Guoqing, 2011; Shu Xugang et al., 2014; Guan Haiyue et al., 2008; Zhang Ruihua, 2004) , but the production of medium chelating strength organozinc by liquid phase synthesis has not been reported in the domestic and foreign literatures that have been consulted so far.

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