| 摘要 |
A supplemented animal feed composition comprising (a) an animal feed that is deficient in a trace metal admixed with (b) a diet-supplementing effective amount of a polyvalent metal cation propionate having the formula M(CH3CH2COO-)x, wherein M is a polyvalent metal cation form of said deficient metal that is selected from the group consisting of Zn+2, Cu+2, Fe+3, Fe+2, Mn+2, Co+2 and Cr+3, and x is an integer equal to the cationic charge of M. The metal propionates are used as biologically available and economical sources of trace metal for supplementation in animal diets.
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