日粮不同种类的饲草料对荷斯坦青年母牛粪尿中总氮、氨态氮和粪中NH3、H2S散发量的影响
일량불동충류적사초료대하사탄청년모우분뇨중총담、안태담화분중NH3、H2S산발량적영향
The Effects of Different Types of Forage Diets on Young Holstein Cows Total Nitrogen, Ammonia Nitrogen from Fecal and Urine and Emission of NH3、H2,S From Fecal
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