Feed additives containing yeast microelement chelate and production thereof

Abstract

A feed additive containing yeast, trace element chelate and inorganic metallic salt is prepared through adding yeast and said inorganic salt, regulating pH value to 5, chelating reaction at 60-90 deg.C for 90 min, and spray drying. Its advantages are high biological utilization rate, high effect on improving immunity and quality of animal, high survival rate and high laying rate or weight increasing rate.

Description

technical field

[0001] The invention relates to a production method of an animal feed additive, in particular to a feed additive containing a yeast trace element chelate and a production method thereof. Background technique

[0002] Domestic feed trace element additives have developed from inorganic mineral additives to organic trace element additives. Compared with inorganic substances, the absorption rate of trace elements of amino acid chelate for feed has been greatly improved. Trace elements of inorganic salts, the total bioavailability is less than 20%. "China Feed" No. 21 report in 1999: According to radioisotope determination and LD-50 research, chelates have higher bioavailability and less toxicity than trace elements in inorganic salts, and the absorption of zinc lysine rate, 1.7-1.8 times higher than zinc sulfate, however, the absorption rate still hovers around 50%. At the same time, the composition is only one or several amino a...