An object of the present invention is to provide a feed additive composition for ruminants that contains 30% by weight or more of a biologically active substance, is a dispersion type, has a high protective property in the lumen, and is excellent in elution in the digestive tract. Is to provide. The present invention includes (A) at least one selected from hydrogenated vegetable oil and hydrogenated animal oil having a melting point higher than 50 ° C. and lower than 90 ° C., (B) 0.05 wt% to 6 wt% lecithin, (C) 30 wt% % Or more and less than 65% by weight of biologically active substance, (D) 0.01% by weight or more and less than 0.8% by weight of natural vegetable oil, and 0.1% by weight or more and less than 6% by weight of water. The present invention relates to a feed additive composition for ruminants.本発明の目的は、生物学的活性物質を３０重量％以上含有し、分散型であって、ルーメンにおける高い保護性を備え、且つ、消化管における溶出性にも優れる反芻動物用飼料添加組成物を提供することにある。 本発明は、（Ａ）融点が５０℃より高く９０℃より低い硬化植物油及び硬化動物油から選ばれる少なくとも一つ、（Ｂ）０．０５重量％以上６重量％以下のレシチン、（Ｃ）３０重量％以上６５重量％未満の生物学的活性物質、（Ｄ）０．０１重量％以上０．８重量％未満の天然植物油、及び０．１重量％以上６重量％未満の水を含有することを特徴とする、反芻動物用飼料添加組成物に関する。
