| 摘要 |
PURPOSE:To obtain the title additive by-passing a biologically active substance from rumen and absorbing said substance in digestive organs in and after abomasum by dispersing a biologically active substance into a specific protective matrix, coating and protecting. CONSTITUTION:A biologically active substance (e.g. methionine or lysine) is dispersed into a protective matrix consisting essentially of a metallic salt of fatty acid (preferably calcium salt of 8-22C fatty acid) having <=5wt.% free metal hydroxide content, coated and protected to give the objective additive. The content of biologically active substance is preferably 2-40wt.%. |
