| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inexpensive and safe feed additive improving the strength of the eggshell of poultry, the quality of egg and its productivity and the meat quality of livestock and its productivity, and to provide a method for producing the feed additive. <P>SOLUTION: This feed additive is obtained by dissolving calcium obtained from shells in a solution of acetic acid and citric acid. The method for producing the feed additive comprises putting the powder of the shells and water in the solution of the acetic acid with the citric acid dissolved therein, stirring a pickled liquid with the powder to promote the dissolution of the powder, stopping dissolving when the dissolution of the powder is almost finished, filtering the pickled liquid and maturing the obtained filtered liquid. The improvements of the strength of the eggshell of the poultry, the quality of the egg and its productivity, and the meat quality of the livestock and its productivity can be realized through adding the feed additive to a feed directly or to drinking water for the livestock. <P>COPYRIGHT: (C)2004,JPO |
