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以3头带瘤胃瘘管肉牛用尼龙袋法对大豆、向日葵粕、花生粕、棉仁粕、菜籽粕、鱼粉等7种饲料的瘤胃总氨基酸和解率进行了比较研究,其总氨基酸的瘤胃降解率分别为74.55%,81.99%,40.69%,32.87%,41.08%,35.73%,30.60%;粗蛋白降解率(X)与总氨基酸降解率(Y)显著相关(Y=-1.90+1.01X(r=0.996,n=7,P〈0.01)。不同时间点瘤胃降解残渣中氨基酸占总