1% wheat bran supplement was fed to all cows in the experiment. The result showed that crude protein, fiber and fat percentage of microbial and urea treated rice straw were 4.8%,30.0%,1.66% and 5.5%,29.9%,1.54%.

• 结果表明:微贮和氨化稻秸的粗蛋白、粗纤维、粗脂肪的含量分别为4.；8%25；30