【摘要】 高产蛋鸡按每吨饲料添加１５０克该植物提取物（５％），能降低饲料消耗、提 高产蛋率、降低死淘率。本实验表明：投入产出比为１：３．５１。更多还原

【Abstract】 Adding 150 gram of plant extract (5 %) to 1 ton tonlayer food,could cut down food comsumption, increase egg production and reduce death rate. This result showed that the ratio of investment to benefit was 1: 3. 51.更多还原