飼糧蛋白質(zhì)濃度和可吸收氨基酸平衡對玉米青貯飼糧奶牛生產(chǎn)反應(yīng)的影響Effects of dietary protein concentration and balance of absorbable amino acids on productive responses of dairy cows fed corn silage-based diets

脂肪使用格哈特全自動快速索氏提取儀Soxtherm 2000提取樣品測定

蛋白質(zhì)使用凱氏定氮法，蛋白質(zhì)轉(zhuǎn)換系數(shù)為6.25

中性洗滌纖維、酸性洗滌纖維、酸洗木質(zhì)素使用范式法測定