标题：Production level, feed conversion efficiency, and nitrogen use efficiency of dairy production systems in China
作者：ChongWang Jian-Xin Liu*（刘建新） Harinder Paul SinghMakkar Ning-bo Wei Qun-mei Xu
来源出版物：Trop Anim Health Prod 卷： 46 页:669–673出版年：FEB 2014
附件：TAHP(2014)46-669-673_WangCong.pdf