PROBLEM TO BE SOLVED: To provide a reproductive capacity improving agent composition and method for a mother cow for breeding that can improve the reproductive capacity of a mother cow for breeding which exhibits a condition causing decrease in ovarian function, such as follicular cyst, or affecting its estrus or conception by recovering the ovarian function of the cow by giving it a mixture of specific edible herbs.SOLUTION: According to a reproductive capacity improving method for a mother cow for breeding, hormone treatment is given to a mother cow for breeding, and also a reproductive capacity improving agent composition consisting of specific herb ingredients is given to the cow at a percentage of 0.05 to 1 weight percent relative to cattle feed.COPYRIGHT: (C)2016,JPO&INPIT【解決手段】繁殖母牛にホルモン処置を施すと共に、特定のハーブ成分からなる繁殖能の改善剤組成物を牛の飼料に対し0.05~1重量%の割合で給与する、繁殖母牛における繁殖能の改善方法である。【効果】卵胞嚢腫等の卵巣機能低下を引き起こす症状のみられる繁殖母牛に、特定の食用ハーブの混合品を給与することにより、牛の卵巣機能を回復させ、あるいは発情や妊娠等に影響を及ぼすことができる。【選択図】 なし