The present disclosure provides a feedstuff for ruminants for promoting production of endogenous Omega-3 unsaturated fatty acids. The feedstuff includes a total mixed ration for ruminants, linseed and vitamin E. The present disclosure also provides dairy products produced from the ruminants fed with the feedstuff.本揭示內容提供一種反芻動物之飼糧,用於促進高內生性Omega-3不飽和脂肪酸之生成。飼糧包含:反芻動物完全混合日糧、亞麻仁籽、以及維生素E。本揭示內容亦包含反芻動物餵飼此飼糧所生產之乳製品。