問答題已知全價配合飼料為:玉米40%,麩皮25%,蠶豆12%。菜籽粕10%,統(tǒng)糠11%,骨粉1%,食鹽0.5%,復(fù)合預(yù)混料0.5%,根據(jù)此比例計算出濃縮配方?