305天产奶量校正及4%标准奶    1、305天产奶量校正系数产奶不足305天的校正系数天数铁氧化物240250260270280290巴彬斯基征3003051胎1.1821.1481.1161.0361.0551.0311.0111.0002-5胎1.1651.1331.1031.0771.0521.0311.0111.0006胎以上1.1551.1231.0941.070